The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2013
Filed:
Dec. 01, 2009
Xionghou Gao, Lanzhou, CN;
Dong Ji, Lanzhou, CN;
Haitao Zhang, Lanzhou, CN;
Hongchang Duan, Lanzhou, CN;
Di LI, Lanzhou, CN;
Zhengguo Tan, Lanzhou, CN;
Yi Su, Lanzhou, CN;
Chenxi Zhang, Lanzhou, CN;
Yi Wang, Lanzhou, CN;
Yanqing MA, Lanzhou, CN;
Yanbo Sun, Lanzhou, CN;
Xionghou Gao, Lanzhou, CN;
Dong Ji, Lanzhou, CN;
Haitao Zhang, Lanzhou, CN;
Hongchang Duan, Lanzhou, CN;
Di Li, Lanzhou, CN;
ZhengGuo Tan, Lanzhou, CN;
Yi Su, Lanzhou, CN;
Chenxi Zhang, Lanzhou, CN;
Yi Wang, Lanzhou, CN;
Yanqing Ma, Lanzhou, CN;
Yanbo Sun, Lanzhou, CN;
PetroChina Company Limited, , CN;
Abstract
Modified molecular sieve characterized by improved sodium-resisting contamination activity and preparation method thereof are provided. The method comprises: adding molecular sieve in phosphorus-containing organic solution, and reacting for 10-200 minutes at temperature of 70-200° C. and pressure of 0.2-1.2 MPa, and then filtering, drying and calcining. The said modified molecular sieve contains 90-99 wt. % molecular sieve as dry basis and 1-10 wt. % phosphorus as oxide. The said method can improve the capability of sodium-resisting contamination effectively, and its technology is simple and fits the existing catalyst production apparatus and process. The said modified molecular sieve has high sodium-resisting contamination activity, and the model catalyst by sodium contamination has high activity retention.