[미국특허]
Process for preparing modified V—Ti—P catalysts for synthesis of 2,3-unsaturated carboxylic acids
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07B-035/00
B01J-027/199
B01J-037/08
B01J-021/06
B01J-023/00
C07C-051/353
C07C-057/04
B01J-027/198
B01J-037/03
B01J-035/00
출원번호
US-0829245
(2017-12-01)
등록번호
US-10065180
(2018-09-04)
발명자
/ 주소
Norman, David William
King, Greg Alan
출원인 / 주소
Eastman Chemical Company
대리인 / 주소
Arnold, Jr., James
인용정보
피인용 횟수 :
0인용 특허 :
53
초록▼
The invention relates to a catalyst composition comprising a mixed oxide of vanadium, titanium, and phosphorus modified with alkali metal. The titanium component is derived from a water-soluble, redox-active organo-titanium compound. The catalyst composition is highly effective at facilitating the v
The invention relates to a catalyst composition comprising a mixed oxide of vanadium, titanium, and phosphorus modified with alkali metal. The titanium component is derived from a water-soluble, redox-active organo-titanium compound. The catalyst composition is highly effective at facilitating the vapor-phase condensation of formaldehyde with acetic acid to generate acrylic acid, particularly using an industrially relevant aqueous liquid feed.
대표청구항▼
1. A process for preparing a 2,3-unsaturated carboxylic acid, comprising: contacting a formaldehyde source with a carboxylic acid in the presence of a condensation catalyst under vapor-phase condensation conditions to obtain the 2,3-unsaturated carboxylic acid,wherein the condensation catalyst compr
1. A process for preparing a 2,3-unsaturated carboxylic acid, comprising: contacting a formaldehyde source with a carboxylic acid in the presence of a condensation catalyst under vapor-phase condensation conditions to obtain the 2,3-unsaturated carboxylic acid,wherein the condensation catalyst comprises a mixed oxide of vanadium (V), titanium (Ti), phosphorus (P), and alkali metal (M), andwherein the titanium component is derived from an organo-titanium compound, wherein the organo-titanium compound is titanium(IV) bis(ammonium lactate)dihydroxide. 2. The process according to claim 1, wherein the formaldehyde source is formaldehyde, 1,3,5-trioxane, dimethoxymethane, or diacetoxymethane and the carboxylic acid is acetic acid or propionic acid. 3. The process according to claim 1, wherein the formaldehyde source is an aqueous solution of formaldehyde, 1,3,5-trioxane, dimethoxymethane, or diacetoxymethane and the carboxylic acid is acetic acid or propionic acid. 4. The process according to claim 3, wherein the aqueous solution comprises from 30 to 65 weight percent of formaldehyde. 5. The process according to claim 1, wherein the alkali metal is selected from at least one of lithium, sodium, potassium, rubidium, and cesium. 6. The process according to claim 1, wherein the alkali metal comprises potassium. 7. The process according to claim 1, wherein the catalyst composition further comprises a pre-shaped support.
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