Loading patent…
AssigneesChina Petroleum & Chemical Corporation, Research Institute of Petroleum Processing, Sinopec
InventorsYunfei Bi, Guofu Xia, Mingfeng Li, Qinghe Yang, Weiguo Huang, Qingzhou Guo, Wenxiu Fang, Luqiang Wang, Hongbao Li, Honghui Li, Jie Gao
Estimating the term…
A molecular sieve has a silica/alumina molar ratio of 100-300, and has a mesopore structure. One closed hysteresis loop appears in the range of P/P0=0.4-0.99 in the low temperature nitrogen gas adsorption-desorption curve, and the starting location of the closed hysteresis loop is in the range of P/P0=0.4-0.7. The catalyst formed from the molecular sieve as a solid acid not only has a good capacity of isomerization to reduce the freezing point, but also can produce a high yield of the product with a lower pour point. The process for preparing the catalyst involves steps including crystallization, filtration, calcination, and hydrothermal treatment.
A molecular sieve having mesopores, comprising Al2O3 and SiO2 at a molar ratio between Al2O3 and SiO2 of 1:(150-200), wherein said molecular sieve has a framework of ZSM-22 or Beta molecular sieve, a low temperature nitrogen gas adsorption-desorption curve of said molecular sieve has one closed hysteresis loop appears in the range of P/P0=0.4-0.99 between an adsorption branch and a desorption branch, and a starting location is in the range of P/P0=0.4-0.6, and
Dependencies are inferred from the claim text.