A high-activity double-metal-cyanide catalyst, a method for fabricating the same, and applications of the same are disclosed. An organic complexing ligand, which is formed via mixing fatty alcohols and alicyclic carbonates, is used to generate a high-activity double-metal-cyanide catalyst. The high-activity double-metal-cyanide catalyst includes at least one double-metal-cyanide compound, at least one organic complexing ligand, and an optional functionalized compound. The double-metal-cyanide catalyst of the present invention has a higher activity than the conventional double-metal-cyanide catalysts. The polyols generated by the present invention has an insignificant amount of high-molecular-weight compounds.

The present invention relates to a laurolactam preparation method, a synthesizing device therefor, a laurolactam composition prepared thereby, and a polylaurolactam preparation method using the laurolactam composition, the laurolactam preparation method comprising the steps of: a) synthesizing cyclododecanone oxime into laurolactam through a Bechmann rearrangement in the presence of a catalyst; b) mixing the laurolactam synthesized in step a) in a good solvent and removing the catalyst; and c) mixing the laurolactam, from which the catalyst was removed in step b), in a poor solvent and recrystallizing same.

The present invention relates to a laurolactam preparation method, a synthesizing device therefor, a laurolactam composition prepared thereby, and a polylaurolactam preparation method using the laurolactam composition, the laurolactam preparation method comprising the steps of: a) synthesizing cyclododecanone oxime into laurolactam through a Bechmann rearrangement in the presence of a catalyst; b) mixing the laurolactam synthesized in step a) in a good solvent and removing the catalyst; and c) mixing the laurolactam, from which the catalyst was removed in step b), in a poor solvent and recrystallizing same.

A method for preparing biomass graphene by using cellulose as a raw material includes preparing a catalyst solution, carrying out ionic coordination and high-temperature deoxidization on cellulose and a catalyst so as to obtain a precursor, carrying out thermal treatment and pre-carbonization, and carrying out acid treatment and drying to obtain the graphene. The graphene is uniform in morphology with a single-layer or multi-layer two-dimensional layered structure having a dimension of 0.5 m to 2 m, and an electric conductivity of 25000 S/m to 45000 S/m. The graphene can be applied to electrode materials of super capacitors and lithium ion batteries, and can also be added to resin and rubber as an additive so as to improve physical properties of the resin and the rubber.

A method for preparing biomass graphene by using cellulose as a raw material includes preparing a catalyst solution, carrying out ionic coordination and high-temperature deoxidization on cellulose and a catalyst so as to obtain a precursor, carrying out thermal treatment and pre-carbonization, and carrying out acid treatment and drying to obtain the graphene. The graphene is uniform in morphology with a single-layer or multi-layer two-dimensional layered structure having a dimension of 0.5 m to 2 m, and an electric conductivity of 25000 S/m to 45000 S/m. The graphene can be applied to electrode materials of super capacitors and lithium ion batteries, and can also be added to resin and rubber as an additive so as to improve physical properties of the resin and the rubber.

This invention provides a production method of a poly(carbonate-ether)polyol, comprising the steps of: performing a reaction between a carboxylic acid and an epoxide to obtain an intermediate, wherein the carboxylic acid has an acidity constant of 0.2 to 4; and performing a polymerization reaction between the intermediate and carbon dioxide under the action of a rare earth doped double metal cyanide of Zn.sub.3[Co(CN).sub.6].sub.2 to obtain a poly(carbonate-ether)polyol. In the production method of the poly(carbonate-ether)polyol provided by this invention, a carboxylic acid having a suitable acidity constant is used as an initiator and an epoxide is firstly activated by using the carboxylic acid, and polyethers having different molecular weights generated in situ after activation are used as chain transfer agents to be involved in the polymerization reaction between carbon dioxide and the epoxide under the action of a rare earth doped double metal cyanide Zn.sub.3[Co(CN).sub.6].sub.2. This production method of the poly(carbonate-ether)polyol has a shorter reaction time, and the content of a byproduct propylene carbonate in the product is relatively low.

Polycarbonate polyols are made by copolymerizing carbon dioxide and an alkylene oxide in the presence of a starter compound and a carbonate catalyst. The process is operated in semi-batch mode by combining starter, catalyst and a small amount of alkylene oxide in a reaction vessel, pressurizing the vessel with carbon dioxide, initiating polymerization, and then feeding both carbon dioxide and alkylene oxide to the vessel under polymerization conditions without removal of product until the feeds are completed.

Polycarbonate polyols are made by copolymerizing carbon dioxide and an alkylene oxide in the presence of a starter compound and a carbonate catalyst. The process is operated in semi-batch mode by combining starter, catalyst and a small amount of alkylene oxide in a reaction vessel, pressurizing the vessel with carbon dioxide, initiating polymerization, and then feeding both carbon dioxide and alkylene oxide to the vessel under polymerization conditions without removal of product until the feeds are completed.

Provided is a liquid hydrogen storage material including 1,1-biphenyl and 1,1-methylenedibenzene, the liquid hydrogen storage material including the corresponding 1,1-biphenyl and 1,1-methylenedibenzene at a weight ratio of 1:1 to 1:2.5. The corresponding liquid hydrogen storage material has excellent hydrogen storage capacity value by including materials having high hydrogen storage capacity, and is supplied in a liquid state, and as a result, it is possible to minimize initial investment costs and the like required when the corresponding liquid hydrogen storage material is used as a hydrogen storage material in a variety of industries.

Provided is a liquid hydrogen storage material including 1,1-biphenyl and 1,1-methylenedibenzene, the liquid hydrogen storage material including the corresponding 1,1-biphenyl and 1,1-methylenedibenzene at a weight ratio of 1:1 to 1:2.5. The corresponding liquid hydrogen storage material has excellent hydrogen storage capacity value by including materials having high hydrogen storage capacity, and is supplied in a liquid state, and as a result, it is possible to minimize initial investment costs and the like required when the corresponding liquid hydrogen storage material is used as a hydrogen storage material in a variety of industries.