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Adsorbent, application of adsorbent to refining of dimethyl benzyl alcohol hydrogenolysis raw material co-produced by co-oxidation method, and method for refining dimethyl benzyl alcohol hydrogenolysis raw material co-produced by co-oxidation method in virtue of adsorbent

A technology of dimethylbenzyl alcohol and adsorbent, applied in the field of organic chemical industry, can solve the problems affecting process economy, poor catalyst stability, poor cumene selectivity, etc., and achieves improved reaction adsorption efficiency, stable properties, and prolonged adsorption time. Effect

Active Publication Date: 2020-04-10
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biggest difficulty of this process lies in the hydrogenolysis reaction of dimethyl benzyl alcohol to generate cumene. The quality of the hydrogenolysis reaction is related to whether the cumene can be recycled and lost, which directly affects the economy of the whole process.
[0006] Catalysts for the hydrogenolysis of dimethyl benzyl alcohol mainly include platinum-palladium noble metal catalysts, nickel-based catalysts and copper-based catalysts. The base catalyst has problems such as poor stability and more heavy components
[0007] There are many patent reports on catalysts for the hydrogenolysis of dimethyl benzyl alcohol to prepare cumene. U.S. Patent No. 3,337,646 proposes a method for preparing cumene by gas-phase hydrogenolysis of α-dimethyl benzyl alcohol, using Ni-Cr-Al2O3 Catalyst, the catalyst needs gas-phase hydrogenolysis of dimethyl benzyl alcohol at 350 ° C, high energy consumption, and poor stability of the catalyst
The quality of different hydrogenolysis raw materials is affected by the epoxidation reaction. A certain amount of harmful impurities are produced during the epoxidation reaction, which cannot be removed in the ordinary rectification process, resulting in harmful impurities in the hydrogenolysis raw materials of dimethyl benzyl alcohol. Substances that affect the hydrogenolysis reaction

Method used

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  • Adsorbent, application of adsorbent to refining of dimethyl benzyl alcohol hydrogenolysis raw material co-produced by co-oxidation method, and method for refining dimethyl benzyl alcohol hydrogenolysis raw material co-produced by co-oxidation method in virtue of adsorbent
  • Adsorbent, application of adsorbent to refining of dimethyl benzyl alcohol hydrogenolysis raw material co-produced by co-oxidation method, and method for refining dimethyl benzyl alcohol hydrogenolysis raw material co-produced by co-oxidation method in virtue of adsorbent

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Effect test

Embodiment 1

[0051] Five materials from sludge, SBA-15, graphene, γ-aminopropyl-triethoxysilane, and phenylpropionic acid produced by the wastewater biochemical system were mixed according to the mass ratio of 0.2:6:0.5:0.01:0.03. Stir at 60°C for 8h. Roast at 600°C for 140min in a nitrogen atmosphere in a tube furnace, wash with water until neutral, and dry at 105°C for 6h to obtain a carbon-based mesoporous silica carrier, which is defined as Adsorbent 1.

Embodiment 2

[0053] The sludge from the wastewater biochemical system, SBA-15, graphene, γ-aminopropyl-triethoxysilane, and phenylpropionic acid were mixed according to the mass ratio of 0.1:5.2:0.4:0.02:0.06. Stir at 60°C for 8h. Roast at 600°C for 160min in a nitrogen atmosphere in a tube furnace, wash with water until neutral, and dry at 105°C for 5h to obtain a carbon-based mesoporous silica carrier, which is defined as Adsorbent 2.

Embodiment 3

[0055] The sludge from the wastewater biochemical system, SBA-15, graphene, γ-aminopropyl-triethoxysilane, and phenylpropionic acid were mixed according to the mass ratio of 0.2:4.5:0.3:0.03:0.04. Stir at 60°C for 8h. Roast at 500°C for 150min in a nitrogen atmosphere in a tube furnace, wash with water until neutral, and dry at 105°C for 6h to obtain a carbon-based mesoporous silica carrier, which is defined as Adsorbent 3.

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Abstract

The invention discloses an adsorbent, application of the adsorbent to refining of a dimethyl benzyl alcohol hydrogenolysis raw material co-produced by a co-oxidation method, and method for refining the dimethyl benzyl alcohol hydrogenolysis raw material co-produced by the co-oxidation method in virtue of the adsorbent. The adsorbent is carbon-based mesoporous silica-loaded nano-metal platinum and / or nickel oxide, so the adsorbent can be applied to a dimethyl benzyl alcohol stream produced by the PO / CHP co-oxidation method to reduce phenols, organochlorine and heavy components in the dimethyl benzyl alcohol stream and improve the quality of the dimethyl benzyl alcohol stream; and thus, the hydrogenolysis reaction effect of dimethyl benzyl alcohol is improved. The adsorbent provided by the invention has the characteristics of high reaction adsorption efficiency, simple operation, low energy consumption and the like, and can significantly improve the quality of the dimethyl benzyl alcoholhydrogenolysis raw material.

Description

technical field [0001] The invention relates to an adsorbent and its use and method for refining raw materials for hydrogenolysis of dimethyl benzyl alcohol co-produced by a co-oxidation method and belongs to the field of organic chemical industry. Background technique [0002] Propylene oxide is an important basic chemical raw material, mainly used in the production of polyether polyols, propylene glycol ethers, etc., and is also widely used in the production of surfactants, demulsifiers, pesticide emulsifiers and developers, etc., with a wide range of uses. [0003] The industrial production methods of propylene oxide mainly include chlorohydrin method, co-oxidation method (Halcon method), and hydrogen peroxide direct oxidation method (HPPO method). The chlorohydrin method is one of the main methods for producing propylene oxide (PO) in China. The disadvantages of the process, such as serious equipment corrosion and serious environmental pollution, are gradually eliminated...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01D53/02C07C29/76C07C33/20
CPCB01J20/103B01J20/20B01D53/02C07C29/76C07C33/20Y02E50/30
Inventor 虞根海叶建初冷炳文金贞顺贺信淳董岩峰张宏科
Owner WANHUA CHEM GRP CO LTD
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