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Method for decomposing hydrogen phosphide cumene to prepare phynol and acetone

A technology of cumene hydroperoxide and phenol, which is applied in chemical instruments and methods, preparation of organic compounds, catalysts for physical/chemical processes, etc. It can solve problems such as large heat release, no reports of industrialization, decomposition explosion, etc. , to achieve the effects of less by-products, easy control of the reaction progress, and easy separation

Active Publication Date: 2009-01-14
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are three problems in this reaction: one is that the catalyst sulfuric acid corrodes the equipment, and an organic base needs to be added for neutralization in the follow-up section; Decomposition explosion; third, due to the strong acidity, oxidation and dehydration of sulfuric acid, the decomposition selectivity is low, and there are more by-products such as tar
However, the patent lacks a lifespan report, and no report on its industrialization has been seen.

Method used

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  • Method for decomposing hydrogen phosphide cumene to prepare phynol and acetone
  • Method for decomposing hydrogen phosphide cumene to prepare phynol and acetone
  • Method for decomposing hydrogen phosphide cumene to prepare phynol and acetone

Examples

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Effect test

example 1

[0027] Preparation of solid acid catalyst: prepare 500g 1mol / L NH 4 NO 3 solution and 500g 3mol / L NH 4 NO 3 solution; add 50g bentonite (Heishan Town, Liaoning) into a 1000mL three-neck flask, then add 500g 1mol / L NH 4 NO 3 Solution; mechanically stirred, heated to 100°C under condensing and reflux conditions, exchanged for 8h; static overnight. Suction filtration the next day; then pour the filter cake back into the flask, and then add 500g 3mol / L NH 4 NO 3 Solution; mechanically stirred, heated to 100°C under condensing and reflux conditions, exchanged for 8h; static overnight. Then repeatedly wash with water and filter with suction. The filter cake was dried at 120°C for 4h, then calcined at 400°C for 4h, and ground to obtain 1 # catalyst.

[0028]Preparation of phenol acetone: put a 250mL three-necked flask with a condenser in a magnetically stirred water bath; add 50g of acetone (which acts as a solvent) and 1g of catalyst powder, and raise the temperature to 40 ...

example 2 and 3

[0033] Preparation of solid acid catalyst: prepare 500g 1mol / LNH 4 NO 3 solution and 500g 2mol / LNH 4 NO 3 solution; in a 1000mL three-necked flask, add 50g bentonite (Shanghai Shisi Hewei Chemical Co., Ltd.), then add 500g 1mol / LNH 4 NO 3 Solution; mechanically stirred, heated to 100°C under condensing and reflux conditions, exchanged for 8h; static overnight. The next day, it was suction filtered, and a part was taken out and dried at 120°C for 4 hours, then roasted at 400°C for 4 hours, and ground to obtain 2 # catalyst.

[0034] Pour the other part of the filter cake back into the flask, and then add 500g 2mol / L NH 4 NO 3 Solution; mechanically stirred, heated to 100°C under condensing and reflux conditions, exchanged for 8h; static overnight. Then repeatedly wash with water and filter with suction. The filter cake was dried at 120°C for 4h, then calcined at 400°C for 4h, and ground to obtain 3 # catalyst.

[0035] Preparation of phenol acetone: According to meth...

example 4、5、6、7 and 8

[0040] Preparation of solid acid catalyst: prepare 500g 1mol / LNH 4 NO 3 solution and 500g 2mol / LNH 4 NO 3 solution; in a 1000mL three-necked flask, add 50g bentonite (Shanghai Shisi Hewei Chemical Co., Ltd.), then add 500g 1mol / LNH 4 NO 3 Solution; mechanically stirred, heated to 100°C under condensing and reflux conditions, exchanged for 8h; static overnight. Suction filtration the next day, pour the filter cake back into the flask, and then add 500g 2mol / LNH 4 NO 3 Solution; mechanically stirred, heated to 100°C under condensing and reflux conditions, exchanged for 8h; static overnight. Then repeatedly wash with water and filter with suction. The filter cake was dried at 120°C for 4 hours, divided into five equal parts; then roasted at 250°C, 300°C, 350°C, 500°C and 600°C for 4 hours, and ground to obtain 4 # 、5 # 、6 # 、7 # and 8 # catalyst.

[0041] Preparation of phenol acetone: According to method I. 4 # The CHP conversion rate of the catalyst is shown in t...

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Abstract

The invention provides a method for preparing phenol and acetone by composing hydrogen peroxide iso-propyl benzene, which is characterized in that the method adopts a smectite solid-acid catalyst modified by inorganic ammonium salt as a reaction catalyst to make the hydrogen peroxide iso-propyl benzene have the decomposition reaction, with a decomposition temperature of between 35 and 80 DEG C, and a decomposition pressure of 0.1 to 5atm. The method makes the reaction under a mild condition, and has advantages of easy control of extent of reaction, less by-products, non corrosion, easy separation of products, recyclable catalyst, and non phenolic wastewater.

Description

technical field [0001] The present invention relates to a kind of preparation method of phenol and acetone, more specifically, relate to a kind of method of decomposing cumene hydroperoxide to prepare phenol and acetone. Background technique [0002] At present, the most important method of producing phenol in the world is to use propylene and benzene as raw materials, generate cumene through alkylation reaction, cumene is oxidized by air or oxygen to generate cumene hydroperoxide (abbreviation: CHP), and CHP is passed through Decompose to obtain phenol and acetone, among which CHP decomposes to produce phenol and acetone using sulfuric acid as a catalyst. There are three problems in this reaction: one is that the catalyst sulfuric acid corrodes the equipment, and an organic base needs to be added for neutralization in the follow-up section; Decomposition explosion; third, due to the strong acidity, oxidation and dehydration of sulfuric acid, the decomposition selectivity i...

Claims

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Application Information

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IPC IPC(8): C07C39/04C07C49/08C07C37/08B01J21/16
CPCY02P20/52Y02P20/584
Inventor 蒋海洋肖冰赵胤李正张凤秋
Owner PETROCHINA CO LTD
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