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Hydrogenation catalyst using BYD hydrogenation to prepare BDO and method using BYD hydrogenation to prepare BDO

A hydrogenation catalyst and hydrogen preparation technology, which are applied in hydrogenation preparation, Raney-type catalysts, chemical instruments and methods, etc., can solve the problems of difficult separation, low mechanical strength, poor wear resistance, etc., and achieve a short external diffusion path. , the production process and equipment are simple, and the preparation method is simple.

Active Publication Date: 2016-11-23
SHANGHAI XUNKAI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of this, the purpose of the present invention is aimed at the low mechanical strength, poor wear resistance, easy pulverization, difficult separation and easy loss of the existing powder Raney nickel catalyst, which is not suitable for large-tonnage continuous catalytic hydrogenation Insufficient application of BYD, providing a hydrogenation catalyst for preparing BDO by hydrogenation of BYD and a method for preparing BDO by hydrogenation of BYD with simple process operation and good catalytic hydrogenation effect

Method used

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  • Hydrogenation catalyst using BYD hydrogenation to prepare BDO and method using BYD hydrogenation to prepare BDO
  • Hydrogenation catalyst using BYD hydrogenation to prepare BDO and method using BYD hydrogenation to prepare BDO

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preparation example Construction

[0055] S1. Preparation of metal alloy particles;

[0056] S2. Using lye to activate the metal alloy particles;

[0057] S3. Washing the activated metal alloy particles with deionized water;

[0058] S4. Using an aqueous molybdenum salt solution to perform subsequent impregnation and modification treatment of Mo on the washed metal alloy particles;

[0059] S5. Using deionized water to wash the metal alloy particles that have been subsequently impregnated with a molybdenum salt solution to obtain a granular Raney nickel catalyst;

[0060] S6. Using the granular Raney nickel catalyst to perform the first-stage catalytic hydrogenation reaction of BYD in a fixed-bed reactor.

[0061] Among them, S1-S5 are the preparation process of the granular Raney nickel catalyst. The specific implementation method can refer to the description of the first stage of BYD catalytic hydrogenation to prepare the BDO catalyst, so it will not be described here.

[0062] S6 is specifically as follow...

Embodiment 1

[0070] This embodiment illustrates that the average particle diameter is 5 mm, and the composition is Ni 50 Al 50 The preparation process of granular Raney nickel catalyst prepared by alkali solution activation treatment of metal alloy particles.

[0071] In a specific embodiment, it is accurately weighed that the average particle diameter is 5 mm and the composition is Ni 50 Al 50 500g of metal alloy particles, placed in a quartz glass tube with an inner diameter of 50mm, the NaOH alkali solution with a concentration of 1wt% flows from the bottom of the quartz glass tube through the metal alloy particle bed at a rate of 10L / h and then flows out from the top, NaOH alkali The weight space velocity of the liquid is 20h -1 . The bed temperature is 70°C, and the activation treatment time is 2h. After lye activation treatment, wash with deionized water at 50° C. until the pH of the solution after washing is 7-9. The average composition of the prepared granular Raney nickel ca...

Embodiment 2

[0073] This embodiment illustrates that the average particle diameter is 5 mm, and the composition is Ni 48 Al 50 Cr 2 The preparation process of granular Raney nickel catalyst prepared by alkali solution activation treatment of metal alloy particles.

[0074] In a specific embodiment, the preparation of the granular Raney nickel catalyst is carried out according to the method described in Example 1, except that the original composition of the metal alloy particles is Ni 48 Al 50 Cr 2 , the average composition of the prepared granular Raney nickel catalyst is Ni 52.7 Al 45.1 Cr 2.2 .

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Abstract

The invention discloses a hydrogenation catalyst using BYD hydrogenation to prepare BDO and a method using BYD hydrogenation to prepare BDO. The method includes: preparing metal alloy particles; using alkali liquor to activate the metal alloy particles; using deionized water to wash the activated metal alloy particles; using a molybdenum salt aqueous solution to perform subsequent impregnation modification on the washed metal alloy particles; using deionized water to wash the impregnated and modified metal alloy particles to obtain the granular Raney nickel catalyst; using the granular Raney nickel catalyst to perform catalytic hydrogenation reaction on BYD in a fixed bed reactor. The method has the advantages that the method is simple in process, promising in application prospect and huge in economic benefit, and the hydrogenation effect is improved evidently.

Description

technical field [0001] The invention relates to the field of preparation of 1,4-butanediol BDO, in particular to a hydrogenation catalyst for preparing BDO by hydrogenation of BYD used in a fixed-bed reactor and a method for preparing BDO by hydrogenation of BYD. Background technique [0002] 1,4-Butanediol (BDO for short) is a high value-added basic chemical raw material and organic synthesis intermediate, mainly used in the production of tetrahydrofuran (THF), γ-butyrolactone (GBL), polytetramethylene Ethylene glycol ether (PTMEG), polybutylene terephthalate (PBT), polyurethane (PU), degradable plastic polybutylene succinate (PBS), 3-butene-1-ol, etc. Downstream fine chemicals, which have extensive and important uses in the fields of medicine, textiles, and military industry. Due to the rapid development of PU elastic fiber, PTMEG, PBT and degradable plastic PBS in recent years, the production and development of BDO have been stimulated and promoted. According to statist...

Claims

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Application Information

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IPC IPC(8): B01J25/02C07C31/20C07C29/17
Inventor 王立敏孙兵戴连欣钱蔚成国海光邹玮龚耀耀丁佩玉
Owner SHANGHAI XUNKAI NEW MATERIAL TECH
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