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A mesoporous catalyst with hydrothermal stability, preparation method and method for preparing bio-oil by catalyzing hydrothermal liquefaction of microalgae

A technology of hydrothermal stability and hydrothermal liquefaction, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of destroying the framework structure of mesoporous molecular sieves, achieve simple process and alleviate fossil energy The effect of scarcity and easy availability of raw materials

Active Publication Date: 2018-04-03
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) There are more surface hydroxyl groups in the pore walls of mesoporous molecular sieves, and some silicon hydroxyl groups are easily affected by OH in water. - attack and further hydrolysis, destroying the framework structure of mesoporous molecular sieves

Method used

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  • A mesoporous catalyst with hydrothermal stability, preparation method and method for preparing bio-oil by catalyzing hydrothermal liquefaction of microalgae
  • A mesoporous catalyst with hydrothermal stability, preparation method and method for preparing bio-oil by catalyzing hydrothermal liquefaction of microalgae
  • A mesoporous catalyst with hydrothermal stability, preparation method and method for preparing bio-oil by catalyzing hydrothermal liquefaction of microalgae

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Experimental program
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Effect test

Embodiment 1

[0049] According to the solid-liquid ratio of 1:10, weigh 4g microalgae sample and 40mL water into the reactor, the amount of catalyst added is 5% of the microalgae, the mesoporous catalyst is Ni-SBA-15, and the liquefaction temperature is 260°C The pressure is 8.45MPa; the reaction time is 20min, the liquefaction rate of microalgae is 78.8%, the oil production rate is 25.6%, the relative content of furfural and its derivatives in the bio-oil is 57.61%, and the relative content of hexadecanoic acid is 11.25%, and the content of cyclopentanone is 3.20%.

Embodiment 2

[0051] According to the solid-liquid ratio of 1:10, weigh 4g microalgae sample and 40mL water into the reactor, the amount of catalyst added is 10% of the microalgae, the mesoporous catalyst is Co-SBA-15, and the liquefaction temperature is 320°C The pressure is 14.52MPa; the reaction time is 45min, the liquefaction rate of microalgae is 85.12%, the oil production rate is 42.15%, the relative content of furfural and its derivatives in bio-oil is 70.76%, and the relative content of hexadecanoic acid is 8.21%, and the content of cyclopentanone is 1.24%.

Embodiment 3

[0053] According to the solid-liquid ratio of 1:10, weigh 4g microalgae sample and 40mL water into the reactor, the amount of catalyst added is 1% of the microalgae, the mesoporous catalyst is Pd-SBA-15, and the liquefaction temperature is 320°C The pressure is 11.27MPa; the reaction time is 30min, the liquefaction rate of microalgae is 75.9%, the oil production rate is 29.6%, the relative content of furfural and its derivatives in bio-oil is 51.29%, and the relative content of hexadecanoic acid is 18.25%, and the content of cyclopentanone is 4.21%.

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Abstract

The invention discloses a mesoporous catalyst with hydro-thermal stability. The catalyst is prepared by subjecting a mixture containing a dual-template, an active metal salt and a silicon source to one-step hydrothermal crystallization under a sealed condition so as to introduce the metal to a mesoporous molecular sieve SBA-15, wherein the active metal is one or more of Pt, Pd, Zr, Ru, Ni, Co and Mo. The invention also discloses a method of catalyzing microalgae hydrothermal liquefaction with a mesoporous catalyst material with hydro-thermal stability to prepare bio-oil. The method includes introducing the prepared mesoporous catalyst material with hydro-thermal stability into a process of preparing the bio-oil through the microalgae hydrothermal liquefaction. After the bio-oil prepared by liquefaction is separated and purified, the liquefaction product mainly comprises furfural and furfural derivatives.

Description

technical field [0001] The invention relates to a mesoporous catalyst with high hydrothermal stability and a preparation method thereof, which is used in a method for preparing bio-oil by catalyzing liquefaction of microalgae, and belongs to the field of utilizing mesoporous catalyst materials and the field of renewable biomass energy. Background technique [0002] Energy and the environment are the two major themes of human development. Currently, fossil energy reserves are limited and gradually exhausted, and the use of fossil energy has brought serious environmental pollution. Therefore, the development of renewable energy can help reduce dependence on fossil resources, which is of great significance. The energy consumption of my country's transportation industry is huge, and it is increasing year by year. It currently accounts for more than 20% of the total energy consumption of the society, and it is expected to reach 1 / 3 of the same level as developed countries in recen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/03C10L1/02
CPCB01J29/0308B01J29/0325B01J29/0333B01J29/0341B01J2229/18C10L1/02
Inventor 吴玉龙陈宇杨明德胡湖生陈镇刘吉宋莹华
Owner TSINGHUA UNIV
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