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Phosphotungstic acid-metal organic skeleton used for catalyzing hydrolysis of cellulose, and preparation method and application thereof

A technology of metal-organic framework and phosphotungstic acid, which is applied in the direction of chemical instruments and methods, applications, physical/chemical process catalysts, etc., can solve the problem of non-selectivity of catalytic performance, easy loss of acid catalytic ability, complex grafting operation of active functional groups, etc. problem, to achieve the effect of reducing the difficulty of hydrolysis, enhancing reusability, and avoiding the occurrence of glucose side reactions

Inactive Publication Date: 2016-02-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the existing problems in the prior art, such as complex grafting operation of active functional groups, non-selective catalytic performance, easy loss of acid catalytic ability, etc., and to provide a phosphotungstic acid-metal organic compound for catalyzing cellulose hydrolysis. Skeleton and its preparation method and application

Method used

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  • Phosphotungstic acid-metal organic skeleton used for catalyzing hydrolysis of cellulose, and preparation method and application thereof
  • Phosphotungstic acid-metal organic skeleton used for catalyzing hydrolysis of cellulose, and preparation method and application thereof
  • Phosphotungstic acid-metal organic skeleton used for catalyzing hydrolysis of cellulose, and preparation method and application thereof

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Effect test

Embodiment 1

[0031]A phosphoric acid-metal organic skeleton for catalytic cellulose hydrolysis, which is made with the following methods: 0.48g (2mmol) hexal water chloride, 0.23g (1mmol) 2,5-dichloropenzhenylenePigxolic acid, 0.18g (1mmol) 2-amino phenylic acid and 0.125g (0.04 mmol) phosphoric acid to 30 mln, n-two-B-thenmamide, stir well at room temperature, transfer the mixed solution to a clustering four of 100mlThe stainless steel reactor in the fluoride lining is heated from the room temperature to 130 ° C, and the reaction process does not need to be stirred at 130 ° C. After the reaction, it is cooled to the room temperature.The filter liquid is clear and transparent, and the white solid obtained by the filter is dry for 16h at 70 ° C. After drying, the pale yellow powder is a multifunctional material of the phosphoric acid-metal organic skeleton.

Embodiment 2

[0033] A phosphoric acid-metal organic skeleton for catalytic cellulose hydrolysis, use the following methods: 2.25g (8mmol) hexal water chloride, 0.97g (4mmol) 2,5-dichloropenzhenylenePigxolic acid, 0.75g (4mmol) 2-aminophytic dihydramic acid and 1g (0.3 mmol) phosphoric acid to 50 mln, n-di metamimamide, stir well at room temperature, transfer the mixed solution to a polytimonia of 100mlThe stainless steel reactor in the ethylene lining is heated from the room temperature to 110 ° C, and it is maintained for 16h at 110 ° C. The reaction process does not need to be stirred, cooled to room temperature after the reaction, and the sediment that was separated from the centrifugal separation was n, n-di metamimine.After washing, the filter was filtered until the filter liquid was clear and transparent. The dark brown solid obtained by the filter was dried for 16h at a vacuum of vacuum at 80 ° C. After drying, the brown powder was a multifunctional material of the phosphoric acid-metal...

Embodiment 3

[0035] A phosphoric acid-metal organic skeleton for catalytic cellulose hydrolysis, use the following methods: 0.8g (2mmol) hexal water chromium chromium chromium chromium, 0.23g (1mmol) 2,5-dichloropenhebenzeneriPigxolic acid, 0.18g (1mmol) 2-amino phenyl acid and 0.125g (0.04 mmol) phosphoric acid to 15ml0.2 mol / L hydroxide water solution, stir well at room temperature, and transfer the mixed solution to a clustering four of 100mlThe stainless steel reactor in the fluoride lining is heated from the room temperature to 150 ° C, and it is kept 10h at 150 ° C. The reaction process does not need to be stirred. After the reaction, it is cooled to the room temperature.After repeated washing, the filter is filtered until the filter liquid is clear and transparent. The ink green solid obtained by the filter is dried for 16h at 70 ° C. After drying, the yellow-green powder is a multifunctional material of the phosphate tungsten acid-metal organic skeleton.

[0036] For the XRD diagram of...

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Abstract

The invention discloses a phosphotungstic acid-metal organic skeleton used for catalyzing hydrolysis of cellulose, and a preparation method and application thereof. According to the invention, organic ligand with strongly electronegative groups and basic groups is screened out and participates in coordination reaction of a metal organic skeletal material so as to realize functionalization, phospho-tungstic acid is directly added into a synthesis system, and immobilization is realized in the process of synthesis. The prepared phosphotungstic acid-metal organic skeleton reduces the frequency of contact with glucose through formation of a hydrogen bond with cellulose so as to reduce side reaction of glucose under the catalysis of acid, high glucose selectivity is obtained, and oriented conversion of cellulose to glucose can be realized; meanwhile, the effect of the hydrogen bond can weaken the effect of a hydrogen bond in cellulose, reduces the crystallization degree of cellulose, enables cellulose to be easier to hydrolyze and improves hydrolysis efficiency.

Description

Technical field [0001] The invention involves the field of catalysts, which specifically involves a metal organic skeleton for catalytic cellulose hydrolysis and its preparation methods and applications. Background technique [0002] Biomass can be regarded as oil replacement energy with broad development prospects, and the key to transforming it into important energy material and basic platform compounds is to realize cellulose -important part of the biomass's important partial partial partially transformed into glucose.Cellulose hydrolysis is first converted into glucose, and the glucose further occurs in heterogeneity, dehydration, re-hydrogenation, hydrogenation, hydrogenation and other reactive fruit, 5-hydroxytaltalaminated, acetyl propenate, and including sorbitol, mannitol, glycol, and glycol, and glycol, and glycol, and glycol, and glycol, and glycol, and glycol.Elephant glycol, including polyol alcohol and basic platform compounds such as polyol.Although some research...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C13K1/02
CPCB01J31/1805B01J31/2213B01J2531/0238B01J2531/31C13K1/02
Inventor 王艳张颖诗万金泉马邕文
Owner SOUTH CHINA UNIV OF TECH
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