A transformational energy efficient technology using ionic liquid (IL) to couple with monoethanolamine (MEA) for catalytic CO.sub.2 capture is disclosed. [EMmim.sup.+][NTF.sub.2.sup.−] based catalysts are rationally synthesized and used for CO.sub.2 capture with MEA. A catalytic CO.sub.2 capture mechanism is disclosed according to experimental and computational studies on the [EMmim.sup.+][NTF.sub.2.sup.−] for the reversible CO.sub.2 sorption and desorption.

A catalyst composition includes a metal catalyst dispersed in a molten eutectic mixture of alkali metal or alkaline earth metal carbonates or hydroxides. A process for the catalytic cracking of hydrocarbons includes contacting in a reactor system a carbon-containing feedstock with at least one catalyst in the presence of oxygen to generate olefinic and/or aromatic compounds; and collecting the olefinic and/or aromatic compounds; wherein: the at least one catalyst includes a metal catalyst dispersed in a molten eutectic mixture of alkali metal or alkaline earth metal carbonates or hydroxides. A process for preparing the catalyst includes mixing metal catalyst precursors selected from transition metal compounds and rare-earth metal compounds and a eutectic mixture of alkali metal or alkaline earth metal carbonates or hydroxides and heating it. A use of the catalyst in the catalytic cracking process of hydrocarbons.

An activated carbon/palladium-gallium (Pd—Ga) liquid alloy composite catalyst, including a support and an active component supported on the support. The support is acid washed activated carbon. The active component is Pd—Ga liquid alloy. In the present invention, the active component Pd—Ga, present in the form of liquid alloy, forms a self-protective oxide layer. This protects acetylene from secondary reactions on the surface of the catalyst, inhibits or reduces acetylene to deeply hydrogenate to form ethane, thereby increasing ethylene selectivity. The present invention further provides a preparation method of the catalyst, where the catalyst of the present invention is prepared by immersion. The preparation method is simple and easy to operate. When the activated carbon/Pd—Ga liquid alloy composite catalyst provided by the present invention is used for acetylene hydrogenation to prepare ethylene, conversion rate of acetylene is as high as 99.8%, while the ethylene selectivity is as high as 98.9%.

An activated carbon/palladium-gallium (Pd—Ga) liquid alloy composite catalyst, including a support and an active component supported on the support. The support is acid washed activated carbon. The active component is Pd—Ga liquid alloy. In the present invention, the active component Pd—Ga, present in the form of liquid alloy, forms a self-protective oxide layer. This protects acetylene from secondary reactions on the surface of the catalyst, inhibits or reduces acetylene to deeply hydrogenate to form ethane, thereby increasing ethylene selectivity. The present invention further provides a preparation method of the catalyst, where the catalyst of the present invention is prepared by immersion. The preparation method is simple and easy to operate. When the activated carbon/Pd—Ga liquid alloy composite catalyst provided by the present invention is used for acetylene hydrogenation to prepare ethylene, conversion rate of acetylene is as high as 99.8%, while the ethylene selectivity is as high as 98.9%.

The present invention relates to a method for molten metal pyrolysis of hydrocarbons to produce hydrogen gas and carbon. Liquid salt is used to separate produced carbon from the molten metal and to facilitate isolation of produced carbon.

The present invention relates to a method for molten metal pyrolysis of hydrocarbons to produce hydrogen gas and carbon. Liquid salt is used to separate produced carbon from the molten metal and to facilitate isolation of produced carbon.

A catalyst system, which is active in pyrolyzing methane at reaction temperatures above 700° C., comprising a molten salt selected from the group consisting of the halides of alkali metals; the halides of alkaline earth metals; the halides of zinc, copper, manganese, cadmium, tin and iron; and mixtures thereof, the molten salt having dispersed therein one or more catalytically active forms of iron, molybdenum, manganese, nickel, cobalt, zinc, titanium, and copper in the form of finely divided elemental metals, metal oxides, metal carbides or mixtures thereof.

A catalyst system, which is active in pyrolyzing methane at reaction temperatures above 700° C., comprising a molten salt selected from the group consisting of the halides of alkali metals; the halides of alkaline earth metals; the halides of zinc, copper, manganese, cadmium, tin and iron; and mixtures thereof, the molten salt having dispersed therein one or more catalytically active forms of iron, molybdenum, manganese, nickel, cobalt, zinc, titanium, and copper in the form of finely divided elemental metals, metal oxides, metal carbides or mixtures thereof.

A continuous process for the cracking of a polymeric material, includes the continuous introduction of the polymeric material in a stream or bath of molten catalyst. A plant for the cracking of a polymeric material is also related and includes a closed circuit/environment containing a molten catalyst, and an element adapted to keep the molten catalyst in continuous motion.

A continuous process for the cracking of a polymeric material, includes the continuous introduction of the polymeric material in a stream or bath of molten catalyst. A plant for the cracking of a polymeric material is also related and includes a closed circuit/environment containing a molten catalyst, and an element adapted to keep the molten catalyst in continuous motion.