Converting carbon dioxide captured in amine solution to formic acid, involves charging amine loaded with carbon dioxide and resin supported iridium-complex catalyst into autoclave to form first reaction mixture, pressurizing with hydrogen to first reaction mixture to obtain second reaction mixture
	NEWALKAR B; THOTA C; PAI S; SAMANTA C; MAJUMDER S; DAS R K
	2023-09-20
专利权人	BHARAT PETROLEUM CORP LTD (BHAR-Non-standard)
申请日期	2023-09-20
专利号	IN202311063234-A
成果简介	NOVELTY - The method of converting carbon dioxide captured in amine solution to formic acid involves: (a) charging 0.25-2 M an amine loaded with 0.8 mole carbon dioxide and 1-1000 micro-mol/g a resin supported iridium-complex catalyst into an autoclave to form a first reaction mixture and sealing the autoclave; (b) pressurizing with hydrogen (1-60 bar) to the first reaction mixture in the sealed autoclave to obtain a second reaction mixture; (c) heating the second reaction mixture under condition to form an intermediate liquid; and (d) cooling the intermediate liquid followed by acidified with 1N an acid to obtain formic acid. USE - Method of converting carbon dioxide captured in amine solution to formic acid. ADVANTAGE - The catalysts were prepared in a single step by reacting the ligand with the iridium precursor. The captured carbon dioxide in amine solution was directly employed for carbon dioxide reduction to formic acid at 40 bar hydrogen pressure and 150 °C. This process does not require additional de-capturing step to generate carbon dioxide stream. Iridium catalysts are found to be very active and completely selective towards carbon dioxide hydrogenation to formic acid and no formation of side products were observed. The method is an integrated process, and converts carbon dioxide-captured in amine solution to formic acid and hydrogen atmosphere. These supported catalysts could effectively produce up to 0.5 M formic acid concentration out of 0.8 M carbon dioxide loaded amine, and it helps to achieve greater than 60% efficiency of carbon dioxide utilization. The supported catalysts perform in amine-water solution and proving their applicability in real system. The prepared catalysts are easy for synthesis and purification and simple filtration and washing are sufficient for obtaining final supported catalyst. Hence, these catalysts are scalable. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the resin supported iridium-complex catalyst anchored with ethylene diamine loaded polystyrene/trityl resin of formulae (GS-1)-(GS-3) for carbon dioxide-captured in amine solution to formic acid production. (R, R' = H, CH3, C2H5, OCH3, OH, N(CH3)2, NH2, or NHCH3; R'' = CH3, C6H5, C6H5OCH3, butyl or isopropyl; and L= Cl, or OH2).
IPC 分类号	B01J-023/46 ; C07C-209/68 ; C07C-211/63 ; 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/20321
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,PAI S,et al. Converting carbon dioxide captured in amine solution to formic acid, involves charging amine loaded with carbon dioxide and resin supported iridium-complex catalyst into autoclave to form first reaction mixture, pressurizing with hydrogen to first reaction mixture to obtain second reaction mixture. IN202311063234-A[P]. 2023.

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