04-07-2019 дата публикации
Номер: US20190201876A1
Принадлежит:
Provided is a catalyst system for oxidative dehydrogenation, a reactor for oxidative dehydrogenation including the catalyst system, and a method of performing oxidative dehydrogenation using the reactor. In the catalyst system, a fixed-bed reactor is filled with a catalyst for oxidative dehydrogenation in an n-stage structure (n being an integer of 2 or more), wherein each stage of the n-stage structure satisfies Equations 1 and 2 as claimed so that the concentration of an active ingredient included in the catalyst gradually increases in the direction in which reactants are fed into the reactor. Heat generated inside the reactor may be effectively controlled during oxidative dehydrogenation, thereby improving conversion rate, selectivity, and yield. In addition, catalyst deterioration may be reduced, thereby improving long-term stability of the catalyst. 1. A catalyst system for oxidative dehydrogenation , comprising a fixed-bed reactor filled with a catalyst for oxidative dehydrogenation in an n-stage structure (n being an integer of 2 or more) , wherein each stage of the n-stage structure satisfies Equations 1 and 2 below:{'br': None, 'i': X', 'Y, 'wt %+wt %=100 wt %,\u2003\u2003[Equation 1]'} [{'sub': 2', '4, 'X is an amount of ABOand is 5 or more and less than 30, wherein A is one or more metals selected from the group consisting of copper (Cu), radium (Ra), barium (Ba), strontium (Sr), calcium (Ca), beryllium (Be), zinc (Zn), magnesium (Mg), manganese (Mn), and cobalt (Co), and B is iron (Fe); and'}, {'br': None, 'i': X', '>X, 'sub': n', 'n-1, ',\u2003\u2003[Equation 2]'}, 'Y is an amount of a porous support and is more than 70 and 95 or less; and'}], 'wherein{'sub': n', 'n-1, 'wherein, with respect to a direction in which reactants are fed into the reactor, Xis an amount of X present in an n-th stage, and Xis an amount of X present in an (n−1)th stage.'}2. The catalyst system according to claim 1 , wherein the ABOis a coating catalyst coated on the porous ...
Подробнее