The present invention relates to cyclododecanone and a preparation method therefor. According to the present invention, a cyclododecanone preparation method capable of achieving a high conversion rate and minimizing unreacted materials and the production of reaction byproducts can be provided. In addition, the present invention implements a high conversion rate and selectivity despite a simplified process, and thus can be helpfully utilized in economical laurolactam production methods that are easy to mass-produce commercially. According to the present invention, the proportions of cyclododecanol, cyclododecadiol, and the like, obtained as reaction byproducts, in the final product can be drastically reduced, and cyclododecanone can be produced at a high conversion rate.

The present invention relates to cyclododecanone and a preparation method therefor. According to the present invention, a cyclododecanone preparation method capable of achieving a high conversion rate and minimizing unreacted materials and the production of reaction byproducts can be provided. In addition, the present invention implements a high conversion rate and selectivity despite a simplified process, and thus can be helpfully utilized in economical laurolactam production methods that are easy to mass-produce commercially. According to the present invention, the proportions of cyclododecanol, cyclododecadiol, and the like, obtained as reaction byproducts, in the final product can be drastically reduced, and cyclododecanone can be produced at a high conversion rate.

Provided is a method for producing a propylene oligomer, which is advantageous in that a lowly branched propylene oligomer can be obtained at high selectivity. A method for producing a propylene oligomer, including an oligomerization step of oligomerizing propylene at lower than 160° C. in the presence of at least one member selected from a group consisting of a catalyst containing crystalline molecular sieve and a catalyst containing phosphoric acid, a fractional distillation step of obtaining a fraction containing a propylene trimer, a propylene tetramer, or a mixture thereof, and an isomerization step of isomerizing the propylene trimer, propylene tetramer, or mixture thereof contained in the fraction in the presence of a catalyst containing phosphoric acid.

Provided is a method for producing a propylene oligomer, which is advantageous in that a lowly branched propylene oligomer can be obtained at high selectivity. A method for producing a propylene oligomer, including an oligomerization step of oligomerizing propylene at lower than 160° C. in the presence of at least one member selected from a group consisting of a catalyst containing crystalline molecular sieve and a catalyst containing phosphoric acid, a fractional distillation step of obtaining a fraction containing a propylene trimer, a propylene tetramer, or a mixture thereof, and an isomerization step of isomerizing the propylene trimer, propylene tetramer, or mixture thereof contained in the fraction in the presence of a catalyst containing phosphoric acid.

According to the present disclosure, there is provided a preparation method of an acrylonitrile dimer capable of obtaining an acrylonitrile dimer with high purity and enhancing process efficiency and economic feasibility by easily recovering the catalyst used in the reaction.

According to the present disclosure, there is provided a preparation method of an acrylonitrile dimer capable of obtaining an acrylonitrile dimer with high purity and enhancing process efficiency and economic feasibility by easily recovering the catalyst used in the reaction.

Disclosed is catalyst composition, a process for preparing the catalyst composition, and a use of the catalyst composition. The catalyst composition comprises 1 wt % to 4 wt % of free azacarbene, 1 wt % to 2 wt % of azacarbene iron, 15 wt % to 30 wt % of a phase transfer catalyst, 1 wt % to 5 wt % of a hydrogen donor, 5 wt % to 10 wt % of phosphoric acid, 0.5 wt % to 1 wt % of emulsifier, with the rest being solvent. This disclosure also provides a process for preparing the catalyst composition, comprising: mixing the free azacarbene and the azacarbene iron with the solvent according to a ratio, then adding and mixing the phase transfer catalyst and the hydrogen donor, then adding and mixing the phosphoric acid and the emulsifier to obtain the catalyst composition. The beneficial effect of this disclosure is: only less azacarbene iron and free azacarbene are needed to achieve rapid and efficient viscosity reduction of heavy oil.

The present invention provides: a method for producing an epoxyalkane capable of obtaining an epoxide in a high yield while attaining a high olefin conversion rate and a high selectivity for epoxides even when an olefin includes a long carbon chain, and a solid oxidation catalyst. The method for producing an epoxyalkane of the present invention comprises reacting an olefin with an oxidant in the presence of a solid oxidation catalyst, wherein the solid oxidation catalyst comprises a transition metal and a carrier that supports the transition metal, and the carrier is a composite of a metal oxide with a phosphonic acid.

The present invention provides: a method for producing an epoxyalkane capable of obtaining an epoxide in a high yield while attaining a high olefin conversion rate and a high selectivity for epoxides even when an olefin includes a long carbon chain, and a solid oxidation catalyst. The method for producing an epoxyalkane of the present invention comprises reacting an olefin with an oxidant in the presence of a solid oxidation catalyst, wherein the solid oxidation catalyst comprises a transition metal and a carrier that supports the transition metal, and the carrier is a composite of a metal oxide with a phosphonic acid.

A bifunctional catalyst for example for conversion of oxygenates, the bifunctional catalyst comprising zeolite, alumina binder, Zn and P, wherein Zn is present at least partly as ZnAl.sub.2O.sub.4.