Catalyst precursor

Patent metadata

Field	Value
Publication number	US-11565244-B2
Application number	US-202217833129-A
Country	US
Kind code	B2
Filing date	Jun 6, 2022
Priority date	Dec 16, 2019
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A method of forming dialkyl carbonate is provided, which includes introducing carbon dioxide into a catalyst to form dialkyl carbonate, wherein the catalyst is formed by activating a catalyst precursor using alcohol, wherein alcohol is R3—OH, and R3 is C1-12 alkyl group or C5-12 aryl or heteroaryl group. The catalyst precursor is formed by reacting Sn(R1)2(L)2 and Ti(OR2)4, and Sn(R1)2(L)2 and Ti(OR2)4 have a molar ratio of 1:2 to 2:1. R1 is C1-10 alkyl group, R2 is H or C1-12 alkyl group, and L is O—(C═O)—R5, and R5 is C1-12 alkyl group. The dialkyl carbonate is

First claim

What is claimed is:

1. A catalyst precursor, being formed by reacting Sn(R 1 ) 2 (L) 2 and Ti(OR 2 ) 4 , wherein Sn(R 1 ) 2 (L) 2 and Ti(OR 2 ) 4 have a molar ratio of 1:1,
R 1 is C 1-10 alkyl group,
R 2 is H or C 1-12 alkyl group, and
L is O—(C═O)—R 5 , and R 5 is C 1-12 alkyl group, and
wherein the catalyst precursor has a chemical structure of

2. The catalyst precursor as claimed in claim 1 , wherein R 1 is butyl group, and R 2 is C 4-6 alkyl group.

Assignees

• Ind Tech Res Inst

Inventors

• Yang Chih-Yao
• Wu Kuo-Ching
• Hsu Hsi-Yen
• Chao Yu-Shan

Classifications

• C07C68/01

  from carbon monoxide and oxygen · CPC title

• B01J2523/47

  Titanium · CPC title

• B01J2523/43

  Tin · CPC title

• C07C68/04

  from carbon dioxide or inorganic carbonates · CPC title

• B01J2231/321

  Hydroformylation, metalformylation, carbonylation or hydroaminomethylation · CPC title