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High hydrothermal stability MOFs catalyst, preparation method of MOFs (Metal Organic Framework) catalyst, and method for preparing chemical product through conversion of cellulose

A technology of thermal stability and catalyst, applied in the field of high hydrothermal stability MOFs catalyst, cellulose conversion preparation chemicals, preparation field, can solve the problems of depletion of fossil resources, low physical and chemical stability of MOFs, etc. Activity and good type-selective catalytic performance, the effect of improving the conversion rate

Active Publication Date: 2018-10-19
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there are two problems: one is the depletion of fossil resources, and the other is serious environmental problems
However, compared with traditional porous materials, the physical and chemical stability of MOFs is relatively low, so the development of a new type of MOFs material with good hydrothermal stability will have very good application prospects.

Method used

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  • High hydrothermal stability MOFs catalyst, preparation method of MOFs (Metal Organic Framework) catalyst, and method for preparing chemical product through conversion of cellulose
  • High hydrothermal stability MOFs catalyst, preparation method of MOFs (Metal Organic Framework) catalyst, and method for preparing chemical product through conversion of cellulose
  • High hydrothermal stability MOFs catalyst, preparation method of MOFs (Metal Organic Framework) catalyst, and method for preparing chemical product through conversion of cellulose

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Experimental program
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Effect test

Embodiment 1

[0039] Weigh 5g of cellulose sample, 0.125g of catalyst and 50mL of deionized water into the reactor according to the ratio of solid to liquid of 10:1, the amount of catalyst added is 2.5% of the cellulose, and the metal organic framework compound catalyst is CeO 2 -UiO-66, the hydrothermal conversion temperature is 240°C; the reaction time is 6h, and the cellulose conversion rate is 77.08%. The relative content of aldehyde products such as furfural and cinnamaldehyde in the catalytic conversion products is 41.75%, and the relative content of acid compounds such as lactic acid and levulinic acid in the water-soluble products is 88.66%.

Embodiment 2

[0041] Weigh 5g of cellulose sample and 0.125g of catalyst and 50mL of deionized water into the reactor according to the ratio of solid to liquid of 10:1. 2 o 3 -UiO-66, the hydrothermal conversion temperature is 240°C; the reaction time is 6h, and the cellulose conversion rate is 79.59%. The relative content of aldehyde products such as furfural and cinnamaldehyde in the catalytic conversion products is 40.87%, and the relative content of acid compounds such as lactic acid and levulinic acid in the water-soluble products is 94.82%.

Embodiment 3

[0043] Weigh 5g of cellulose sample, 0.125g of catalyst and 50mL of deionized water into the reactor according to the solid-liquid ratio of 10:1. 2 o 3 -UiO-66, the hydrothermal conversion temperature is 240°C; the reaction time is 6h, and the cellulose conversion rate is 78.31%. The relative content of aldehyde products such as furfural and cinnamaldehyde in the catalytic conversion products is 39.02%, and the relative content of acid compounds such as lactic acid and levulinic acid in the water-soluble products is 95.68%.

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Abstract

The invention discloses a high hydrothermal stability MOFs (Metal Organic Framework) catalyst, a preparation method of the MOFs catalyst, and a method for preparing a chemical product through conversion of cellulose. The catalyst takes a metal organic framework compound as a carrier, is prepared by modifying the metal organic framework compound UiO-66 through a metallic oxide, and is prepared by modifying one or more transition metals through an incipient-wetness impregnation method. The invention further discloses a process for preparing the chemical product by catalyzing hydrothermal conversion of the cellulose through one or more modified catalysts, the method comprises the processes of introducing the catalyst of the modified metal organic framework compound in a reaction kettle and preparing the functional chemical product by catalyzing the hydrothermal conversion of the cellulose. After a catalysate is separated and purified, the obtained produces are mainly the functional chemical products like furfural, cinnamyl aldehyde, lactic acid and levulinic acid.

Description

technical field [0001] The invention relates to the field of renewable biomass energy, in particular to a highly hydrothermally stable MOFs catalyst, its preparation and its use in cellulose conversion to prepare chemicals. Background technique [0002] Energy is the material basis for human survival. At present, people's demand for energy still mainly depends on fossil fuels such as coal, oil and natural gas. But there are two problems: one is the depletion of fossil resources, and the other is serious environmental problems. New energy sources such as nuclear energy, wind energy, and solar energy cannot be applied on a large scale due to imperfect technologies and other reasons. Therefore, changing the way of energy production and consumption and developing and utilizing renewable and clean energy resources is of great significance to establishing a sustainable energy system, promoting national economic development and environmental protection. Finding and developing ne...

Claims

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Application Information

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IPC IPC(8): B01J31/16B01J31/26B01J31/28B01J35/10B01J37/02C07C27/00C07C45/51C07C45/60C07C47/238C07C51/00C07C59/08C07C59/185C07D307/50
CPCC07C27/00C07C45/51C07C45/60C07C51/00C07D307/50B01J31/1691B01J31/26B01J31/28B01J37/0201B01J35/617B01J35/643B01J35/633C07C47/238C07C59/08C07C59/185
Inventor 陈宇王恺丰纪红兵
Owner SUN YAT SEN UNIV
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