摘要:
A solid adsorbent for an unsaturated hydrocarbon comprising (a) (i) a silver or copper(I) halide or (ii) a silver or copper(I) halide and the halide of a bivalent metal, or (iii) a silver or copper(I) halide and an aluminum halide, and (b) polystyrene or a derivative thereof.This solid adsorbent can effectively adsorb an unsaturated hydrocarbon such as ethylene from a gas mixture by contacting the gas mixture therewith at a temperature of -40.degree. C. to 140.degree. C. under normal pressures.
摘要:
A solid form adsorbent of carbon monoxide, that is obtained by the process including the following steps. First, copper salts or copper oxide is stirred in a solvent. Then, into the solution or suspension thus obtained, active carbon is added. Finally, the solvent is removed by means of pressure reduction, distillation, etc. The carbon monoxide adsorbent produced according to this invention adsorbs carbon monoxide rapidly when it is brought into contact with a mixed gas. The adsorbed carbon monoxide can be readily separated and discharged through either heating the carbon monoxide adsorbent to above 60.degree. C. or reducing the partial pressure of carbon monoxide. The carbon monoxide obtained in accordance with the present invention is stable relative to the water content in the mixed gas, and it is capable of separating carbon monoxide directly from the mixed gas containing the water. Also, the separated carbon monoxide does not contain the vapor of the solvent from the carbon monoxide adsorbent. Therefore, it is not necessary to provide equipment to collect the solvent vapor. Furthermore, this carbon monoxide adsorbent does not produce corrosive gases, etc. The carbon monoxide adsorbent obtained by using copper (II) salts or copper (II) oxide is also stable relative to sulfur content in the mixed gas.
摘要:
A solid adsorbent for an unsaturated hydrocarbon comprising (a) (i) a silver or copper(I) halide or (ii) a silver or copper(I) halide and the halide of a bivalent metal, or (iii) a silver or copper(I) halide and an aluminum halide, and (b) polystyrene or a derivative thereof.This solid adsorbent can effectively adsorb an unsaturated hydrocarbon such as ethylene from a gas mixture by contacting the gas mixture therewith at a temperature of -40.degree. C. to 140.degree. C. under normal pressures.
摘要:
Poly-p-phenylene is produced by reaction of benzene with oxygen gas in the presence of a chloride of a metal having a lower valence and aluminum chloride.
摘要:
There is disclosed a novel colloidal metal dispersion in which colloidal particles of a metal are protected by specific polymers including hydrazide polymers, acrylic ester polymers and acrylamide polymers. The colloidal metal dispersion is highly stable, and the colloidal metal particles protected by such specific polymers can be easily and strongly bound to various amino group-containing compounds to give stable colloidal metal complexes, which have a wide variety of uses, such as the use as a solid catalyst, the use for the treatment and diagnosis of various diseases, the use for studying tissues of living bodies, the use for including mutation of microorganisms, etc.
摘要:
Disclosed is a method for preparing a non-aqueous dispersion of particles of a metal and/or a metal compound, which comprises contacting an aqueous dispersion of particles of a metal and/or a metal compound with a water-immiscible, non-aqueous liquid in the presence of a surfactant and in the presence or absence of a water-soluble inorganic acid salt and/or a water-soluble organic acid salt exhibiting substantially no surface activity, wherein when the contacting of the aqueous dispersion with the non-aqueous liquid is conducted in the absence of the salt, the salt is added after the contacting, thereby causing the particles to be migrated from the aqueous dispersion into the non-aqueous liquid.
摘要:
A solid adsorbent for an unsaturated hydrocarbon including (a) (i) a copper(I) halide or oxide or (ii) a halide, carboxylate, sulfate, basic salt, oxide, or amine complex salt of copper(II) and (b) activated carbon or graphite is described.This solid adsorbent can effectively adsorb an unsaturated hydrocarbon such as ethylene from a gas mixture by being placed in contact with the gas mixture at a temperature of -40.degree. C. to 90.degree. C. under normal pressure.
摘要:
There is disclosed an adsorbent comprising a macroreticular polystyrene type resin having amino groups selected from the group consisting of primary, secondary and tertiary amino groups and combinations thereof, and a copper(I) halide fixed to the macroreticular polystyrene type resin. Such an adsorbent has been found to be advantageously employed for the selective adsorption-separation of a gas from a gaseous mixture.