Disclosed is a method for preparing -phenylethanol. The method comprises the following steps: (1) reducing a catalyst in a reactor in advance; (2) introducing pre-heated hydrogen gas to warm the reactor to a predetermined temperature; and (3) introducing a raw material styrene oxide to perform a hydrogenation reaction so as to obtain the -phenylethanol. The catalyst is NiCu/Al.sub.2O.sub.3 nanosized self-assembled catalyst. The reactor is an ultrasonic field micro-packed bed reactor. The method of the present invention enables the selectivity of the -phenylethanol to reach 99% or more.

Disclosed is a method for preparing -phenylethanol. The method comprises the following steps: (1) reducing a catalyst in a reactor in advance; (2) introducing pre-heated hydrogen gas to warm the reactor to a predetermined temperature; and (3) introducing a raw material styrene oxide to perform a hydrogenation reaction so as to obtain the -phenylethanol. The catalyst is NiCu/Al.sub.2O.sub.3 nanosized self-assembled catalyst. The reactor is an ultrasonic field micro-packed bed reactor. The method of the present invention enables the selectivity of the -phenylethanol to reach 99% or more.

A method for directly producing methyl acetate and/or acetic acid from syngas, carried out in at least two reaction zones, including: feeding a raw material containing syngas into a first reaction zone to contact and react with a metal catalyst; allowing an obtained effluent to enter a second reaction zone directly or after the addition of carbon monoxide so as to contact and react with a solid acid catalyst; separating the obtained effluent to obtain product of acetate and/or acetic acid, and optionally returning a residual part to enter the first reaction zone and/or the second reaction zone to recycle the reaction. This provides a novel method for directly converting syngas into methyl acetate and/or acetic acid. Further, the product selectivity of the product of methyl acetate or acetic acid is greater than 93%, and the quantity of methyl acetate and acetic acid may be adjusted according to processing.

A method for directly producing methyl acetate and/or acetic acid from syngas, carried out in at least two reaction zones, including: feeding a raw material containing syngas into a first reaction zone to contact and react with a metal catalyst; allowing an obtained effluent to enter a second reaction zone directly or after the addition of carbon monoxide so as to contact and react with a solid acid catalyst; separating the obtained effluent to obtain product of acetate and/or acetic acid, and optionally returning a residual part to enter the first reaction zone and/or the second reaction zone to recycle the reaction. This provides a novel method for directly converting syngas into methyl acetate and/or acetic acid. Further, the product selectivity of the product of methyl acetate or acetic acid is greater than 93%, and the quantity of methyl acetate and acetic acid may be adjusted according to processing.

A method for producing an alcohol having 8 or more and 22 or less carbon atoms includes the following steps: step 1: forming a porous layer on a surface of a porous material having a pore size mode of 30 nm or more and 200 nm or less to obtain a bimodal carrier; step 2: supporting cobalt on the bimodal carrier obtained in step 1 to obtain a catalyst having peaks of pore distribution in a range of 1 nm or more and 25 nm or less and a range of 30 nm or more and 200 nm or less, respectively; and step 3: reacting carbon monoxide with hydrogen at a gauge pressure of 2 MPa or more and 100 MPa or less in the presence of the catalyst obtained in step 2.

A method for producing an alcohol having 8 or more and 22 or less carbon atoms includes the following steps: step 1: forming a porous layer on a surface of a porous material having a pore size mode of 30 nm or more and 200 nm or less to obtain a bimodal carrier; step 2: supporting cobalt on the bimodal carrier obtained in step 1 to obtain a catalyst having peaks of pore distribution in a range of 1 nm or more and 25 nm or less and a range of 30 nm or more and 200 nm or less, respectively; and step 3: reacting carbon monoxide with hydrogen at a gauge pressure of 2 MPa or more and 100 MPa or less in the presence of the catalyst obtained in step 2.

The ethanol synthesis catalyst is a catalyst for synthesizing ethanol from carbon dioxide, and includes at least one carrier selected from the group consisting of ZrO.sub.2, Al.sub.2O.sub.3, and TiO.sub.2; Fe and Cu supported on the carrier; and Na and/or K supported on the carrier. In one embodiment, the catalyst including iron oxide and copper oxide as the Fe and Cu supported on the carrier can be used, hydrogen can be supplied to the catalyst to reduce iron oxide and copper oxide, and a reaction gas containing CO.sub.2 can be supplied to the catalyst after reduction to obtain ethanol from CO.sub.2.

The ethanol synthesis catalyst is a catalyst for synthesizing ethanol from carbon dioxide, and includes at least one carrier selected from the group consisting of ZrO.sub.2, Al.sub.2O.sub.3, and TiO.sub.2; Fe and Cu supported on the carrier; and Na and/or K supported on the carrier. In one embodiment, the catalyst including iron oxide and copper oxide as the Fe and Cu supported on the carrier can be used, hydrogen can be supplied to the catalyst to reduce iron oxide and copper oxide, and a reaction gas containing CO.sub.2 can be supplied to the catalyst after reduction to obtain ethanol from CO.sub.2.

A monolithic catalyst used for a carbon dioxide hydrogenation reaction and a method for preparing the same. The catalyst comprises a carrier, a coating, and active components. The carrier is a honeycomb ceramic. The coating and the active components are separately applied to honeycomb ceramic hole walls from inside to outside. Moreover, each of the honeycomb ceramic holes is divided into an upper segment and a lower segment, and different active components are separately loaded on the two segments. The method for preparing the monolithic catalyst comprises first applying a coating to a honeycomb ceramic by means of impregnation to obtain a coating-containing carrier, and then applying active components to an upper segment and a lower segment of the coating-containing carrier successively by means of impregnation to obtain the monolithic catalyst.

A monolithic catalyst used for a carbon dioxide hydrogenation reaction and a method for preparing the same. The catalyst comprises a carrier, a coating, and active components. The carrier is a honeycomb ceramic. The coating and the active components are separately applied to honeycomb ceramic hole walls from inside to outside. Moreover, each of the honeycomb ceramic holes is divided into an upper segment and a lower segment, and different active components are separately loaded on the two segments. The method for preparing the monolithic catalyst comprises first applying a coating to a honeycomb ceramic by means of impregnation to obtain a coating-containing carrier, and then applying active components to an upper segment and a lower segment of the coating-containing carrier successively by means of impregnation to obtain the monolithic catalyst.