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:
May. 15, 2018
Filed:
Jul. 27, 2012
Xionghou Gao, Beijing, CN;
Haitao Zhang, Beijing, CN;
Di LI, Beijing, CN;
Xueli LI, Beijing, CN;
Hongchang Duan, Beijing, CN;
Zhengguo Tan, Beijing, CN;
Chaowei Liu, Beijing, CN;
Yunfeng Zheng, Beijing, CN;
Xiaoliang Huang, Beijing, CN;
Jinjun Cai, Beijing, CN;
Chenxi Zhang, Beijing, CN;
Zhishuang Pan, Beijing, CN;
Gengzhen Cao, Beijing, CN;
Xionghou Gao, Beijing, CN;
Haitao Zhang, Beijing, CN;
Di Li, Beijing, CN;
Xueli Li, Beijing, CN;
Hongchang Duan, Beijing, CN;
Zhengguo Tan, Beijing, CN;
Chaowei Liu, Beijing, CN;
Yunfeng Zheng, Beijing, CN;
Xiaoliang Huang, Beijing, CN;
Jinjun Cai, Beijing, CN;
Chenxi Zhang, Beijing, CN;
Zhishuang Pan, Beijing, CN;
Gengzhen Cao, Beijing, CN;
PETROCHINA COMPANY LIMITED, Beijing, CN;
Abstract
Provided is a phosphorus-containing ultrastable Y-type rare earth (RE) molecular sieve and the preparation method thereof. The method is: based on NaY molecular sieve as a raw material, obtaining 'one-exchange one-roast' RE-Na Y-type molecular sieve through the steps of exchanging with RE, pre-exchanging with dispersing, and the first calcination; and then performing ammonium salt exchange, phosphorus modification, and the second calcination on the 'one-exchange one-roast' RE-Na Y-type molecular sieve, wherein the sequence of the RE exchange and the pre-exchange with dispersing is unlimited, and the sequence of the ammonium salt exchange and the phosphorus modification is unlimited as well. The obtained molecular sieve contains RE oxide 1-20 wt %, phosphorus 0.1-5 wt %, and sodium oxide no more than 1.2 wt %, and has a crystallization degree of 51-69% and a lattice parameter of 2.449-2.469 nm. Heavy oil conversion rate can be increased by using the molecular sieve as an active component in a catalytic cracking catalyst.