Method of direct hydrogenation of carbon dioxide to formic acid, involves contacting carbon dioxide with hydrogen in presence of base and iridium catalyst to form first reaction mixture, heating to obtain second reaction mixture, and cooling followed by acidification with acid to obtain formic acid
	NEWALKAR B; THOTA C; SAMANTA C; DAS R; MAJUMDER S
	2023-08-29
专利权人	BHARAT PETROLEUM CORP LTD (BHAR-Non-standard)
申请日期	2023-08-29
专利号	IN202311057923-A
成果简介	NOVELTY - Method of direct hydrogenation of carbon dioxide to formic acid, involves contacting carbon dioxide (1-40 bar) with hydrogen (1-60 bar) in presence of a 2M base and 5-25 micro molar of an iridium catalyst to form a first reaction mixture, heating the first reaction mixture under condition with stirring to obtain a second reaction mixture, and cooling the second reaction mixture followed by acidification with an acid to obtain formic acid. USE - Method of direct hydrogenation of carbon dioxide to formic acid. ADVANTAGE - The iridium catalyst enables direct hydrogenation of carbon dioxide to formic acid and found to be very active and completely selective towards CO2 hydrogenation to formic acid and no formation of side products and Partial pressure of reactants (CO2 and hydrogen) directly linked with formic acid formation and higher concentration of formic acid is achieved with increasing pressure of reactants. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an iridium catalyst of formula (I) for direct hydrogenation of carbon dioxide to formic acid. M= Ir;L'= 1,2,3,4,5-Pentamethylcyclopentadiene (Cp*);L= Cl, OH2; and R= Me, Et, OMe, OH, NMe2, NH2 and NHMe.
IPC 分类号	B01J-023/46 ; C07C-209/48 ; C07C-209/68 ; C07C-051/15 ; C07C-051/41 ; C07C-051/44 ; C07C-053/02 ; C07C-053/06
国家	印度
专业领域	化学化工
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/20634
专题	中国科学院新疆生态与地理研究所
作者单位	BHARAT PETROLEUM CORP LTD (BHAR-Non-standard)
推荐引用方式 GB/T 7714	NEWALKAR B,THOTA C,SAMANTA C,et al. Method of direct hydrogenation of carbon dioxide to formic acid, involves contacting carbon dioxide with hydrogen in presence of base and iridium catalyst to form first reaction mixture, heating to obtain second reaction mixture, and cooling followed by acidification with acid to obtain formic acid. IN202311057923-A[P]. 2023.

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