Title:
MODIFIED Y-TYPE MOLECULAR SIEVE, PREPARATION METHOD THEREFOR, AND CATALYST CONTAINING SAME
Document Type and Number:
WIPO Patent Application WO/2018/153301
Kind Code:
A1
Abstract:
Disclosed are a modified Y-type molecular sieve containing rare earth and rich in secondary pores, a preparation method therefor, and a catalyst containing the modified Y-type molecular sieve. In the modified Y-type molecular sieve, the content of oxidized rare earth is about 4% to 12% by weight, the content of phosphorus is 0 to 10% by weight, the content of sodium oxide is not more than about 1.0% by weight, the total pore volume is about 0.36 mL/g to 0.48 mL/g, the pore volume of the secondary pores occupies for about 20% to 40% of the total pore volume, the cell constant is about 2.440 nm to 2.455 nm, the content of the non-skeleton aluminum is not higher than about 10%, the lattice collapse temperature is not lower than about 1060ºC, and a ratio of B acid to L acid is not less than about 3.50. The preparation method for the molecular sieve comprises the steps of: rare earth exchange, hydrothermal roasting, gas-phase ultrastable modification and acid treatment, and comprises an optional step of introduction of phosphorus. When the modified Y-type molecular sieve is used in heavy oil catalytic cracking, the modified Y-type molecular sieve has a higher heavy oil conversion activity and a lower coke selectivity, and has a higher gasoline yield, a higher liquefied gas yield, a higher light oil yield and a higher total liquid yield.
Inventors:
ZHOU LINGPING (CN)
ZHANG WEILIN (CN)
XU MINGDE (CN)
CHEN ZHENYU (CN)
TIAN HUIPING (CN)
ZHU YUXIA (CN)
ZHANG WEILIN (CN)
XU MINGDE (CN)
CHEN ZHENYU (CN)
TIAN HUIPING (CN)
ZHU YUXIA (CN)
Application Number:
PCT/CN2018/076428
Publication Date:
August 30, 2018
Filing Date:
February 12, 2018
Export Citation:
Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
SINOPEC RES INST PETROLEUM (CN)
SINOPEC RES INST PETROLEUM (CN)
International Classes:
C10G11/05; B01J29/08
Foreign References:
| CN1382631A | 2002-12-04 | |||
| CN1382768A | 2002-12-04 | |||
| CN101081369A | 2007-12-05 | |||
| US20130131419A1 | 2013-05-23 |
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
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