Invention Grant
- Patent Title: Silica composite, method for producing the same, and method for producing propylene using the silica composite
-
Application No.: US15357037Application Date: 2016-11-21
-
Publication No.: US09670110B2Publication Date: 2017-06-06
- Inventor: Kenji Akagishi , Ryusuke Miyazaki
- Applicant: ASAHI KASEI KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: ASAHI KASEI KABUSHIKI KAISHA
- Current Assignee: ASAHI KASEI KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2010-262752 20101125
- Main IPC: C07C1/20
- IPC: C07C1/20 ; C07C1/24 ; B01J29/85 ; B01J37/04 ; B01J37/08 ; B01J37/30 ; B01J21/08 ; C07C2/00 ; C07C2/86 ; C07C2/12

Abstract:
A method for producing propylene, the method contains: producing a silica composite by preparing a raw material mixture containing silica and zeolite; drying the raw material mixture to obtain a dried product; and calcining the dried product; wherein the method contains the step of bringing a solution of phosphate into contact with the zeolite and/or the dried product to thereby adjust a phosphorus content in the silica composite to 0.01 to 1.0% by mass based on the total mass of the silica composite, a source of the phosphorus is phosphate, and the zeolite is of MFI type and has a SiO2/Al2O3 ratio (by mol) of 20 or more; and bringing the silica composite into contact with a hydrocarbon source containing at least one component selected from the group consisting of ethylene, ethanol, methanol, and dimethyl ether in the presence of steam.
Public/Granted literature
Information query