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Method for preparing hydrocarbyl phenol by catalytic conversion of phenolic compound in presence of molybdenum-based catalyst

A phenolic compound, molybdenum-based catalyst technology, applied in the preparation of organic compounds, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of expensive precious metals, low energy efficiency, high pressure conditions, etc.

Inactive Publication Date: 2018-01-16
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional nickel-molybdenum sulfide and cobalt-molybdenum sulfide catalytic systems can effectively realize the hydrodeoxygenation conversion of phenolic compounds, but the catalyst needs to be constantly fed with hydrogen sulfide gas to ensure activity, and the benzene ring of phenolic compounds is completely saturated. application
Chinese patent 201510032509.9 uses Ru supported on zeolite molecular sieves as a catalyst to hydrodeoxygenate lignin phenolic derivatives to prepare naphthenes, which solves the defect of low energy efficiency in the bio-oil refining process, but the reaction requires high pressure conditions, and precious metals are expensive. generalization of the method
At present, there is no report on the efficient production of hydrocarbylphenols from phenolic compounds with molybdenum-based catalysts.

Method used

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  • Method for preparing hydrocarbyl phenol by catalytic conversion of phenolic compound in presence of molybdenum-based catalyst
  • Method for preparing hydrocarbyl phenol by catalytic conversion of phenolic compound in presence of molybdenum-based catalyst
  • Method for preparing hydrocarbyl phenol by catalytic conversion of phenolic compound in presence of molybdenum-based catalyst

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Experimental program
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Effect test

Embodiment 1

[0051] The preparation of embodiment 1 catalyst

[0052] Take by weighing 0.62g ammonium heptamolybdate and place in the quartz tube reactor, under N 2 The temperature was raised to 500°C in the atmosphere, and calcined for 4 hours, and the obtained unsupported catalyst was denoted as MoO 3 .

[0053] Weigh ammonium heptamolybdate and dissolve it in ammonia solution, then impregnate equal volume into silicon dioxide (SiO 2 ) on the carrier, after being dried in an oven at 120°C for 12 hours, the catalyst precursor was subjected to a temperature-programmed activation reaction. The specific reaction process was as follows: 2 In the atmosphere, 0.5g of the precursor was placed in a quartz reaction tube and the temperature was raised to 500°C, and calcined for 4h. The obtained supported catalyst was denoted as MoO 3 / SiO 2 .

Embodiment 2

[0054] Embodiment 2 catalyst preparation

[0055] The preparation method of the catalyst is the same as in Example 1, and the difference from Example 1 is that the concentration of ammonium molybdate in the impregnating solution can be changed, or catalysts with different loads can be obtained through multiple impregnations. For example, the loading of Mo is 1wt%, 5wt%, 10wt%, 15wt%, 20wt%, 30wt%, 50wt% and 80wt% MoO 3 / SiO 2 catalyst.

Embodiment 3

[0056] The preparation of embodiment 3 catalyst

[0057] Catalyst preparation method is the same as embodiment 1, and difference with embodiment 1 is that SiO 2 The carrier was replaced by alumina (Al 2 o 3 ), activated carbon (AC) carrier, and catalysts loaded on different carriers can be obtained. Such as MoO 3 / Al 2 o 3 、MoO 3 / AC Catalyst.

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Abstract

The invention discloses a method for preparing hydrocarbyl phenol by catalytic conversion of a phenolic compound in the presence of a molybdenum-based catalyst. The method comprises mixing a phenoliccompound, a molybdenum-based catalyst and a reaction solvent, adding the mixture into a sealed reactor, feeding gas into the reactor, heating the mixture to 150-350 DEG C, carrying out stirring for areaction for 0.5-2h, then filtering to remove a solid catalyst and carrying out rotary evaporateion to obtain a liquid product. The phenolic compound has a wide source, a cost is low, product alkyl phenol selectivity is high, an added value is high, alcohol or an alcohol-water mixture is used as a reaction solvent, environmental friendliness is realized, pollution is avoided, any inorganic acids and alkalis are avoided in the reaction process, the common environmental pollution problems in the biomass processing technology are solved, the reaction conditions are mild, the process can be carried out at a low temperature, high-efficiency conversion of the reactants can be realized without consuming hydrogen gas and the method is suitable for large-scale industrial trial production.

Description

technical field [0001] The invention relates to a method for efficiently transforming phenolic compounds to prepare hydrocarbyl phenols, more specifically, to a method for using a molybdenum-based catalyst to catalyze selective deoxygenation and hydrocarbylation of phenolic compounds to obtain hydrocarbyl phenols. Background technique [0002] Biomass resources are the most extensive renewable resources in the world, and the development of biomass conversion technology has become an urgent task. As the only non-petroleum resource in nature that can provide renewable aromatic compounds, lignin is considered to be one of the best substitutes for oil and natural gas. It is the main component of lignocellulosic biomass and the main by-product of the hydrolysis and fermentation of lignocellulosic biomass to ethanol industry and paper industry. Due to its high oxygen content and poor stability of derivative products, it has not been fully utilized. Then the environment is serious...

Claims

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Application Information

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IPC IPC(8): C07C39/06C07C39/07C07C37/11B01J23/28B01J27/24B01J27/051B01J27/19
CPCY02P20/52
Inventor 李永丹崔凯
Owner TIANJIN UNIV
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