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We report a highly efficient system for CO 2 capture and conversion to a "green" solid carbonate that utilizes solid NaOH. This novel technology has important advantages over the currently available technologies regarding percent of CO 2 capture, heat production, and carbonate yields. The study uses a technoeconomic analysis as a quantitative tool in the valuation of CO 2 capture for an environmental and economic gains objective. We highlight two important advantages of this technology that go hand in hand with a sustainable development: low economic cost and negative energy and carbon footprint.

Ru(g 5 -C 5 H 5 )Cl(TPPDS) 2 ], [TPPDS=P(C 6 H 5 )(C 6 H 4 SO 3 ) ) 2 ] in biphasic (n-heptane/water) medium hydrogenates toluene, benzene and m-xylene (105°C, 1400 psig H 2 , substrate/catalyst=600:1, 4 h) and in toluene hydrogenation gives methylcyclohexane. Catalytic activity increases with temperature, H 2 pressure, ionic strength, and pH lower than 10. The catalytic water solution can be reused several times with little activity loss.

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