Carbon dioxide carriers, reversible

The same workers have been able to isolate another similarly reversible copper(I) carbon dioxide carrier, Cu(02CO-r-Bu)(CN-<-Bu)3 (153). This complex forms in benzene solution at 10°C according to (70). 

A suspension of polymeric cupric dimethoxide in pyridine reacts with CO2 to yield the cupric methyl carbonate. The CO2 moiety is, however, very labile the insertion could be reversed by heating the reaction mixture at 80" under a stream of nitrogen [SO]. Another reversible carbon dioxide carrier was found in copper(I) rerr-butoxide, which was stabilized by rerr-butyl isocyanide. The rerr-butyl carbonato complex was formed during the reaction with CO2 [811. Carbon dioxide also reacts with ROCu(PPh3)2 0 produce (ROCOj)Cu(PPhj>3, Hydrolysis or thermolysis of these alkylcarbonato complexes gives the binuctear carbonato copper (I) complex (PPhj>2 CuCK Oj Cu(PPhj)2, which can be further convened into the bicarbonate complex f(HC)C02)Cu(PPh3)3] by reaction with CO2 in moist solvents [82],... 

Cadmium(II) transport, over Hg(II) and Zn(II). 102-104 Carbon dioxide facilitated transport, 111 separated from nitrogen in ILMs, 146,150 Carbon monoxide facilitated transport, 112 reversible binding, 30-32 Carboxylate ionophore antibiotics, metal ion transport, 86 Carrier molecule effect on solute flux, 4 function in facilitated transport, 124 Carrier-facilitated transport—... 

Gambarotta, S., F. Arena, C. Floriani, and P. Zanazzi (1982). Carbon dioxide fixation. Bifunctional complexes containing acidic and basic sites working as reversible carriers. /. Am. Chem. Soc. 104(19), 5082-5092. 

OSD is a unique process that returns hydrogen and pure carbon dioxide without any further management. One of the key aspects is the proprietary multifunction iron-based material it not only reversibly ceases and picks up oxygen but it is also the heat carrier. The second key factor is the three vessels loop inherently returning the separated products. 

Walther D (1987) Homogeneous catalytic reactions of carbon dioxide with unsaturated substrates, reversible C02-carriers, and transcarboxylation reactions. Coord Chem Rev 79 135-174... 

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