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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 23. Отображено 23.
30-04-2014 дата публикации

Verification method and device for radiotherapy plan

Номер: CN103761441A
Автор: LI QIANG, JIA WENTING
Принадлежит:

The invention discloses a verification method for a radiotherapy plan. The method includes the first step that a TPS generates an initial radiotherapy plan and sends the initial radiotherapy plan to an OIS and a plan comparison and verification system; the second step that the OIS edits the initial radiotherapy plan and sends the edited radiotherapy plan to the plan comparison and verification system; the third step that the plan comparison and verification system carries out verification on the initial radiotherapy plan and the edited radiotherapy plan and informs the OIS to send the edited radiotherapy plan to a radiotherapy machine if the initial radiotherapy plan and the edited radiotherapy plan pass the verification. The invention further discloses a verification device for the radiotherapy plan. The verification method and device for the radiotherapy plan have the advantages that through automatic verification on the edited radiotherapy plan which is actually applied to treatment ...

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Номер записи: 1
23-05-2023 дата публикации

Milling device combined with pulse laser auxiliary heating

Номер: CN116140680A
Автор: ZHAO JIAN, CAO JINBI, LIANG GUOXING, YANG SHIQING, HAO XINHUI, JIA WENTING, HUANG YONGGUI, LYU MING
Принадлежит:

The invention relates to the technical field of ultrasonic milling, in particular to a milling device combined with pulse laser auxiliary heating, and solves the technical problems in the background art. A Z-axis moving workpiece of an XYZ three-axis milling machine is connected with a supporting arm perpendicular to a Z axis, and the supporting arm is fixedly connected with a spindle motor; the milling cutter is fixedly connected to a driving shaft end of the main shaft motor; a driving shaft of the spindle motor is connected with a horizontal adjusting gear through a bearing, the horizontal adjusting gear is connected with a laser generator through a vertical lifting mechanism, the end of the laser generator is connected with a laser reflecting cover, and the horizontal adjusting gear is meshed with a transmission wheel driven by a driving motor. The laser can be emitted to the laser reflecting cover after being reflected by the surface of the workpiece, and the reflected laser can be ...

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Номер записи: 2
08-07-2015 дата публикации

Radiotherapy dose comparing and displaying method and system

Номер: CN104759037A
Автор: LI QIANG, CHEN ZIJIE, JIA WENTING
Принадлежит:

The invention discloses a radiotherapy dose comparing and displaying method and system. According to the method, by obtaining reference dose values corresponding to different dose data of all kinds of coordinates, at the CT image position, of a cursor, reference isodose lines most approximate to the corresponding reference dose values among isodose lines corresponding to the different dose data of all the kinds are recognized respectively, the distance between the reference isodose line of each kind and the coordinates, at the CT image position, of the cursor is calculated, the reference isodose line with the shortest distance is used as a comparison isodose line, and other isodose lines except the isodose lines with the dose values the same as the dose value of the comparison isodose line among the isodose lines, on a CT image, of the cursor are hidden or/and the isodose lines with the dose values the same as the dose value of the comparison isodose line among the isodose lines are highlighted ...

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Номер записи: 3
30-04-2014 дата публикации

Radiotherapy network information management system

Номер: CN103761623A
Автор: LI QIANG, JIA WENTING
Принадлежит:

The invention discloses a radiotherapy network information management system comprising a communication network, an application server, a database serer, a work station and a TPS, wherein the application server, the database server and the work station are connected through the communication network; the application server and the TPS are connected; the work station is connected with a control table or equipment corresponding to the work station. The radiotherapy network information management system has the advantages that each equipment, the servers and the work station are connected through the communication network, network resources of departments are integrated and reconstructed, each equipment, the network and a software system are managed uniformly, radiotherapy data are comprehensively analyzed, uniformly stored and managed, and treatment amount and working efficiency of the radiotherapy departments are improved.

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Номер записи: 4
04-08-2023 дата публикации

Fabric performance detection device for paper diaper and method thereof

Номер: CN116539503A
Автор: ZENG ZONGYING, HUANG MULI, HUANG ZEJIA, JIA WENTING
Принадлежит:

The invention belongs to the technical field of paper diaper detection, particularly relates to a fabric performance detection device for paper diapers and a method thereof, and provides the following scheme aiming at the problem that cloth cannot be extended in existing paper diaper air permeability detection: the fabric performance detection device comprises a workbench, sliding grooves parallel to each other are formed in the edges, close to the long edges of the two sides, of the upper surface of the workbench correspondingly, boss sliding blocks are slidably connected to the positions, close to the two ends, in the two sliding grooves correspondingly, and clamping devices are arranged at the positions, located on the boss sliding blocks, of the two ends of the workbench correspondingly. When the air permeability of the paper diaper needs to be detected and compared during use, the air permeability effect can be obtained only by extracting the same amount of air within the same time ...

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Номер записи: 5
16-04-2014 дата публикации

Method and device for marking tumor

Номер: CN103729575A
Автор: LI QIANG, LONG TENG, JIA WENTING
Принадлежит:

The invention discloses a method for marking a tumor. The method comprises the following steps of generating an electronic radiotherapy stamp through a scanning or drawing manner; marking an exclusive serial number on each electronic radiotherapy stamp, and then storing the electronic radiotherapy stamp into a basic stamp catalog; calling the electronic radiotherapy stamp of the corresponding part from the basic stamp catalog according to a tumor position of a patient, and editing the electronic radiotherapy stamp, wherein the edited content includes the position and the shape of the marked tumor, specifications of a wedge plate used in the marking radiotherapy and medical advice information; correlating the exclusive serial number of the called electronic radiotherapy stamp and the edited content to patient information in a database; and printing the edited electronic radiotherapy stamp. The invention also discloses a device for marking the tumor. The method and the device have the beneficial ...

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Номер записи: 6
09-05-2023 дата публикации

Preparation method of probiotic fermented rape straw feed

Номер: CN116076616A
Автор: LIU ZHANXIA, WANG JIANGJIANG, LI BINBIN, JIA WENTING, GUO HUIJING, WU HONGBIN, YANG HUI, JIN XINWEN, ZHANG XINCONG
Принадлежит:

The invention discloses a preparation method of probiotic fermented rape straw feed, which comprises the following steps: respectively drying alfalfa and rape straw in the sun, crushing, mixing according to the weight ratio of 1: (1-3), adding activated probiotics, adding clear water to enable the water content of the mixture to be 60%, adjusting the pH value to 6.5 to obtain a material to be fermented, and fermenting the material to obtain the probiotic fermented rape straw feed. Placing the to-be-fermented material in a fermentation device for sealed dark fermentation; wherein the probiotics comprise one or more of enterococcus faecalis, saccharomyces cerevisiae and bacillus subtilis, and account for 3-7% of the mixed weight of the rape straw and the alfalfa. The invention opens up a new way for high-valued utilization of rape straws and industrial chain extension, and provides a new thought for comprehensive utilization of Xinjiang rape straw feed and product upgrading.

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Номер записи: 7
01-08-2023 дата публикации

Method and device for calculating polymorphic 3H and 14C activity concentration of coolant in primary loop of high-temperature gas cooled reactor

Номер: CN116525166A
Автор: CHEN XI, MA QIAN, JIA YONGSHENG, ZHANG YULIN, WANG ERMO, JIA WENTING, ZHANG RUI, LI NA
Принадлежит:

The embodiment of the invention discloses a high-temperature gas cooled reactor primary loop coolant polymorphic 3H, 14C activity concentration calculation method, which comprises the following steps: determining a conversion coefficient according to the temperature and pressure of helium in a primary loop system and the temperature and pressure measured by actual helium sampling; determining an actual helium sampling volume according to the inlet volume of helium in the primary loop system, the inlet volume of air and the inlet volume of the bubbling device; and obtaining the polymorphic 3H and 14C activity concentration of the coolant according to the volume of the bubbling liquid in the bubbling device, the measured value of the low background liquid scintillation counter, the sample preparation volume of the bubbling liquid, the absorption efficiency of the bubbling device, the actual helium sampling volume and the conversion coefficient. And the polymorphic 3H and 14C radioactive activity ...

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Номер записи: 8
23-04-2014 дата публикации

TPS (Treatment Planning System) data processing method and system

Номер: CN103745126A
Автор: LI QIANG, LONG TENG, JIA WENTING
Принадлежит:

The invention discloses a TPS (Treatment Planning System) data processing method and system. The TPS data processing method is applied to the TPS data processing system. The TPS data processing system comprises an intermediate server as well as at least one piece of TPS equipment and at least one mobile terminal which are in communication connection with the intermediate server respectively. The TPS data processing method comprises the following steps: after receiving CT (computed tomography) image obtaining requests sent from the mobile terminals by the intermediate server, obtaining CT images from the corresponding TPS equipment, performing format conversion, and sending the converted CT images to the mobile terminals; performing target volume delineation on the CT images by the mobile terminals, generating pixel information files, and sending the files to the intermediate server; performing format conversion on the received files by the intermediate server, and sending the converted ...

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Номер записи: 9
12-05-2023 дата публикации

Application of asperuloside in proliferation and differentiation of osteoblast line MC3T3-E1

Номер: CN116098913A
Автор: ZHANG CHUNFANG, WANG YAN, ZHANG PENGXIN, SUN MEIYU, JI JIALIN, JIA WENTING, HE JUN
Принадлежит:

The invention relates to a novel application of asperuloside, in particular to an application of asperuloside in proliferation and differentiation of an osteoblast line MC3T3-E1. In-vitro experiments and molecular biology experiments prove that asperuloside can promote proliferation and differentiation of MC3T3-E1 cells, so that the ALP activity is increased, the ratio of OPG/RANKL is up-regulated, bone formation and mineralized nodule generation are promoted, and a mechanism for promoting osteoblast proliferation and differentiation by asperuloside is explored and provided. The invention provides a theoretical basis for treating and preventing osteoporosis by using asperuloside.

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Номер записи: 10
18-04-2023 дата публикации

Catalytic hydrogenation method of metal Pt and 2D semiconductor hybrid nanostructure catalyst

Номер: CN115974648A
Автор: ZHOU JICHENG, CHEN PAN, ZHANG YANJI, ZHANG CHAOJIE, JIA WENTING, CHEN YINYIN
Принадлежит:

The invention provides a catalytic hydrogenation method of a metal Pt and 2D semiconductor hybrid nanostructure catalyst. The preparation method for benzaldehyde hydrogenation comprises the following steps: under the conditions of a first solvent, a first catalyst and a first hydrogenation reaction, a raw material benzaldehyde is subjected to a hydrogenation reaction to prepare benzyl alcohol, the first solvent is water, and the first catalyst is a Pt/at-ZrO2/SBA-15 catalyst; the first hydrogenation reaction conditions comprise that the hydrogen pressure is 0.7 MPa to 1.0 MPa, the reaction temperature is 40 DEG C to 50 DEG C, and the reaction time is 60 minutes to 70 minutes; wherein the content of Pt in the first catalyst is 0.56-1.0 wt%, ZrO2 in the Pt/at-ZrO2/SBA-15 catalyst is a thin film layer and is flatly laid in a pore channel of a carrier SBA-15 molecular sieve in a single-layer form or a multi-layer form, and the active component Pt is anchored on the ZrO2 film layer. The method ...

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Номер записи: 11
16-04-2014 дата публикации

Method and system for reading patient information

Номер: CN103729822A
Автор: LI QIANG, JIA WENTING, WU XIONGBO
Принадлежит:

The invention discloses a method for reading patient information, and the method comprises the following steps: an recognition system sends an information reading command to a reader after receiving patient data from a medical device; the reader detects whether an electric label is in a signal coverage range after receiving the information reading command, reads the patient information from the electronic label and sends the patient information to the recognition system after the electronic label is detected; the recognition system compares whether the received patient information is in accordance with the patient data. The invention further discloses a system for reading the patient information. The method and the system disclosed by the invention have the advantages of ensuring that medical procedures to be proceeded are corresponding to a patient who enters a medical area at present, preventing medical accidents caused by wrong treatment on the patients due to that the patient enters ...

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Номер записи: 12
30-06-2023 дата публикации

Leveling method and leveling system for full-floating leveling ship

Номер: CN116353811A
Автор: PAN WEI, LI YIYONG, LIU DEJIN, LI JIN, FU YUANPING, WANG DIANWEN, SHANG QIANKUN, SONG JIANGWEI, HE YAFENG, ZHU CHUNFENG, XU LIANG, LYU HUSHENG, LI DEZHOU, WANG FUJING, ZHANG HAONAN, JIA YANSHUO, WANG CHONG, WANG WENBIAO, LI YING, WANG CHUANBIN, JIA WENTING, GAO ZHIZHENG, YAO ZHONGLI, WANG SIYUAN, ZHANG CHENGCHENG, WANG JINXIAN
Принадлежит:

The invention belongs to the technical field of leveling ships, and relates to a leveling method and a leveling system for a full-floating leveling ship. The leveling method comprises a moment leveling sub-method, and the moment leveling sub-method comprises the following steps: establishing a three-dimensional coordinate system of a leveling ship; before leveling operation, the large and small vehicles are moved to an operation starting point position, a ship body is leveled, and initial barycentric coordinates of a large and small vehicle system and a ballast tank system are calculated respectively; during the leveling operation, calculating real-time barycentric coordinates of the large and small vehicle system according to the real-time positions of the large and small vehicles and the real-time weight of stones in the riprap pipe so as to calculate real-time gravity torque generated by the movement of the large and small vehicle system; and constructing a moment balance equation to ...

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Номер записи: 13
28-04-2023 дата публикации

Landscape ginkgo tree cultivation method

Номер: CN116018976A
Автор: SONG YUXUAN, JIA WENTING, CAO FULIANG
Принадлежит:

The invention discloses a landscape ginkgo tree cultivation method which comprises the following steps: (1) soil treatment: selecting soil, removing weeds around the soil, spraying a soil treatment material on the surface of the soil, deeply ploughing the soil for 10-12cm, then spraying a soil insect prevention liquid on the surface of the soil, and then leveling the soil; (2) sapling treatment: selecting proper saplings, and pretreating the saplings to obtain to-be-planted ginkgo saplings; and (3) cultivation: digging a pit in the soil in the step (1), spraying a base fertilizer at the bottom of the pit, covering the pit with thick soil, then centralizing and planting the ginkgo tree seedlings in the step (S2) into the pit, covering the ginkgo tree seedlings with fine soil, compacting the ginkgo tree seedlings, watering the planted ginkgo tree seedlings to obtain the landscape ginkgo tree, and regularly fertilizing and irrigating the landscape ginkgo tree. According to the cultivation ...

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Номер записи: 14
14-04-2023 дата публикации

Combined electrostatic sprayer

Номер: CN115957901A
Автор: JIA SHOUXING, DAI YAMENG, HAN DALONG, JIA WENTING, ZHOU YAWEN
Принадлежит:

The combined electrostatic sprayer comprises a sprayer body, a sprayer cover assembly, a nozzle and a filter, a water cavity and a gas channel are formed in the sprayer body, a water inlet hole and a gas inlet hole are formed in the sprayer body, the water inlet hole is communicated with the water cavity, and the gas inlet hole is communicated with the gas channel; the nozzle cover assembly comprises a nozzle cover, a profiling electrode and an insulating resin ring. The nozzle cover is installed at the extending end of the nozzle body in a screwed mode. An air chamber is arranged in the nozzle cover; the profiling electrode and the insulating resin ring are sequentially mounted in the air chamber from inside to outside; the gas channel is communicated with the gas chamber; the nozzle is mounted in a through hole in the center of the spray head cover, and the nozzle and the spray head cover are concentrically distributed; the filter is mounted in the water chamber and communicated with ...

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Номер записи: 15
28-05-2014 дата публикации

Cotton seed meal dephenolizing technology and method for preparing raffinose from cotton seed meal by technology

Номер: CN103819514A
Автор: HU WEIGANG, HUANG QINGDE, JIN XINWEN, GUO ANMIN, ZHANG QIANG, WANG JUNGANG, LI YUHUI, WU HONGBIN, LIU CHENGJIANG, YANG HUI, JIA WENTING, ZHAO ZHIYONG, SONG FANGYUAN
Принадлежит:

The invention relates to a cotton seed meal dephenolizing technology and a method for preparing raffinose from cotton seed meal by the technology. The cotton seed meal dephenolizing technology comprises the following steps: utilizing degreased cotton seed meal as a raw material, pulverizing, sieving, removing cotton flock and cotton hulls, adding ferrous sulfate, adding an ethanol water solution, adding a Na2CO3 conditioner, regulating the PH value to 7-9, agitating, uniformly mixing, and carrying out extrusion and detoxification treatment by a bulking machine so as to obtain extruded and detoxified cotton seed meal. The method for preparing the raffinose from the cotton seed meal by the cotton seed meal dephenolizing technology comprises the following steps: preparing the dephenolized cotton seed meal, and extracting by an alcoholic acid solution; fetching a filtrate, adding phase decoloring activated carbon, distilling under reduced pressure, recovering a solvent, concentrating the filtrate ...

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Номер записи: 16
18-04-2023 дата публикации

Method for preparing furfuryl alcohol through furfural hydrogenation

Номер: CN115974820A
Автор: ZHOU JICHENG, JIA WENTING, CHEN PAN, CHEN YINYIN, ZHANG CHAOJIE
Принадлежит:

The invention relates to a method for preparing furfuryl alcohol through furfural hydrogenation, which comprises the following steps: catalyzing furfural selective hydrogenation to prepare furfuryl alcohol by using a platinum-containing hybrid nanostructure catalyst in a reaction solvent under the conditions of certain hydrogen pressure and reaction temperature, the platinum-containing hybrid nano-structure catalyst is a Pt/(at)-FeOx/SBA-15 catalyst; the preparation method of the platinum-containing hybrid nanostructure catalyst comprises the following steps: coating an SBA-15 molecular sieve with a FeOx film layer by a precipitation method, washing, filtering, drying and calcining to obtain a composite carrier FeOx/SBA-15, and anchoring Pt nanoparticles on the composite carrier FeOx/SBA-15 by a photochemical reduction method to obtain the platinum-containing hybrid nanostructure catalyst. The catalyst shows excellent catalytic activity when being used for catalyzing selective hydrogenation ...

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Номер записи: 17
13-04-2021 дата публикации

Drawing board for plane design

Номер: CN212949858U
Автор: LI XIAORUI, LI QIANJUN, JIA WENTING, 李小锐, 李前军, 贾雯婷
Принадлежит: LANZHOU UNIV OF FINANCE AND ECONOMICS, LANZHOU UNIVERSITY OF FINANCE AND ECONOMICS, 兰州财经大学

The utility model discloses a drawing board for plane design, which relates to the technical field of drawing tools, and comprises a drawing board, a guide rod, a support rod, a first base, a second base and a clamping plate, the first end of the guide rod is provided with the first base, the second end of the guide rod is provided with the second base, and one side of the upper end of the first base is provided with the drawing board; the drawing board is rotatably connected with the first base through a hinge, a hinge seat is arranged at the bottom of the drawing board, a sliding sleeve sleeves the guide rod, a supporting rod is connected between the hinge seat and the sliding sleeve, the first end of the supporting rod is movably connected with the drawing board through the hinge seat, and the second end of the supporting rod is movably connected with the guide rod through the sliding sleeve. The multifunctional drawing board has the advantages that the multifunctional drawing board ...

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Номер записи: 18
15-08-2023 дата публикации

Intaglio roller detection device and detection method thereof

Номер: CN116593483A
Автор: HUANG MULI, HUANG ZEJIA, JIA WENTING, ZENG ZONGYING
Принадлежит:

The invention provides a gravure plate roller detection device and a detection method thereof, and belongs to the technical field of plate roller detection. Comprising a bottom plate, two side plates are fixedly connected to the left side and the right side of the upper surface of the bottom plate, a first rotating shaft is rotationally connected between the two side plates through bearings, a plurality of first roller assemblies are movably arranged on the outer surface of the first rotating shaft, first grooves are formed in the upper surfaces of the side plates, and movable plates are arranged in the first grooves; and a second rotating shaft is rotationally connected between the two movable plates through a bearing. The gravure roller detection device can adapt to gravure rollers of different sizes, the detection of the gravure rollers is more convenient through the assistance of the motor, the working efficiency is improved, the labor intensity is reduced, and meanwhile the first rubber ...

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Номер записи: 19
04-07-2023 дата публикации

High-temperature gas cooled reactor primary loop coolant short-half-life nuclide sampling device and method

Номер: CN116380558A
Автор: CHEN XI, MA QIAN, JIA YONGSHENG, ZHANG YULIN, WANG ERMO, JIA WENTING, ZHANG XINYUE, LI NA
Принадлежит:

The embodiment of the invention discloses a high-temperature gas cooled reactor primary loop coolant short-half-life nuclide sampling device and method. The sampling device comprises a sampling pipeline, a helium collecting device and a discharging pipeline; an inlet of the sampling pipeline is used for being communicated with a primary loop coolant pipeline of the high-temperature gas cooled reactor; an outlet of the sampling pipeline is communicated with an inlet of the helium collecting device; the sampling pipeline is provided with a first stop valve group, a pressure reducing valve group, a regulating valve, a pressure gauge group and a flow meter in series; an outlet of the helium collecting device is connected into an exhaust system through the exhaust pipeline, the helium collecting device is provided with a thermometer, a first pressure gauge, an inlet stop valve and an outlet stop valve, and the exhaust pipeline is provided with a second stop valve set in series. Manual sampling ...

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Номер записи: 20
17-06-2015 дата публикации

Sequence of aptamer used for targeting human nasopharyngeal carcinoma cell and application thereof

Номер: CN104711263A
Автор: REN CAIPING, JIA WENTING, LIU WEIDONG, CHEN YUXIANG, WANG LEI
Принадлежит:

The invention belongs to the technical field of cell biology, and more specifically relates to a sequence of an aptamer used for targeting human nasopharyngeal carcinoma cell and an application thereof. According to the invention, the aptamer capable of specifically combining with human nasopharyngeal carcinoma cells strain 5-8F is screened, so that a sequence S3 capable of specifically combining with 5-8F is obtained. The aptamer of nasopharyngeal carcinoma cell 5-8F has unique stem-loop structure under condition of 0 DEG C, 157mol/L Na<+>, and 0.005mol/L Mg<2+>. The sequence of the aptamer of nasopharyngeal carcinoma cell 5-8F has application prospect on preparation of a nasopharyngeal carcinoma diagnostic reagent, a nasopharyngeal carcinoma treatment medicine, and a nasopharyngeal carcinoma tumour marker, and research of variation of nasopharyngeal carcinoma and normal tissue, nasopharyngeal carcinoma tissue sectioned imaging, nasopharyngeal carcinoma-related in-vivo imaging and nasopharyngeal ...

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Номер записи: 21
16-05-2023 дата публикации

Catalytic hydrogenation method of metal Pd and 2D semiconductor hybrid nanostructure catalyst

Номер: CN116120141A
Автор: ZHOU JICHENG, CHEN PAN, ZHAO XINGXING, JIA WENTING, ZHANG CHAOJIE, CHEN YINYIN
Принадлежит:

The invention provides a catalytic hydrogenation method of a metal Pd and 2D semiconductor hybrid nanostructure catalyst. The styrene hydrogenation preparation method comprises the following steps: under the conditions of a first solvent, a first catalyst and a first hydrogenation reaction, a raw material styrene is subjected to a hydrogenation reaction to prepare ethylbenzene, the first solvent is at least one of isopropanol and absolute methanol, and the first catalyst is a Pd/at-ZrO2/SBA-15 catalyst; the first hydrogenation reaction conditions comprise that the hydrogen pressure is 0.3 MPa to 1.0 MPa, the reaction temperature is 30 DEG C to 40 DEG C, and the reaction time is 20 minutes to 50 minutes; wherein the content of Pd in the first catalyst is 0.08-1.0 wt%, ZrO2 in the Pd/at-ZrO2/SBA-15 catalyst is a thin film layer and is flatly laid in a pore channel of a carrier SBA-15 molecular sieve in a single-layer or multi-layer form, and the active component Pd is anchored on the ZrO2 ...

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Номер записи: 22
23-06-2023 дата публикации

Method for preparing propylene through direct dehydrogenation of propane and catalyst and preparation method thereof

Номер: CN116273137A
Автор: ZHOU JICHENG, ZHANG CHAOJIE, CHEN PAN, CHEN YINYIN, JIA WENTING
Принадлежит:

The invention provides a method for preparing propylene through direct dehydrogenation of propane, a platinum-tin hybrid nano-structure catalyst and a preparation method thereof. The catalyst comprises a composite carrier, an active component and an auxiliary agent, the active component and the auxiliary agent are loaded on the composite carrier, the active component is Pt, the auxiliary agent is Sn, the composite carrier is MeOx/SBA-15 and recorded as PtSn/at-MeOx/SBA-15, MeOx is CeO2 or La2O3, and the auxiliary agent is SBA-15. Wherein MeOx in the composite carrier MeOx/SBA-15 is flatly laid on an SBA-15 molecular sieve in a single-layer form or a multi-layer form through a microwave heating reaction to form a MeOx semiconductor film layer, and an active component Pt and an auxiliary agent Sn in the catalyst PtSn/at-MeOx/SBA-15 are anchored on the composite carrier MeOx/SBA-15 in a nano-particle form through a photocatalytic reduction method, the active component Pt and the MeOx semiconductor ...

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Номер записи: 23