Lignin hydro-cracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, which is applied in the field of catalysts for preparing high-performance bio-oil and its preparation, can solve the problems of poor thermal stability, hydrothermal stability, and low crystallinity, and achieve good stability, high crystallinity, Good cracking effect

Active Publication Date: 2016-11-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method reduces the amount of template agent and increases the yield of β molecular sieve, it needs to add composite template agent and seed crystal, and when the silicon-aluminum ratio exceeds 30, the crystallinity is low, and the thermal stability and hydrothermal stability are poor.

Method used

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  • Lignin hydro-cracking catalyst and preparation method thereof
  • Lignin hydro-cracking catalyst and preparation method thereof
  • Lignin hydro-cracking catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Preparation of amorphous silicon-aluminum precursor

[0045] The preparation concentration is 40g Al 2 o 3 / L sodium aluminate working solution, take SiO 2 28wt% sodium silicate solution, then diluted to a concentration of 120g SiO 2 / L sodium silicate working solution. Take 200mL of sodium aluminate working solution and place it in a gel-forming tank, then add 50mL of sodium silicate working solution, control the reaction temperature at 18°C, and inject CO with a concentration of 50 v% 2 gas, stop passing CO when the pH reaches 10.2 2 , then add 50mL of sodium silicate working solution, and then ventilate and stabilize for 20 minutes to obtain an amorphous silicon-aluminum precursor. The amorphous silicon-alumina precursor is based on the total weight of silicon dioxide and aluminum oxide, and the content in terms of silicon dioxide is 60wt%.

[0046] (2) Preparation of gel

[0047] Press Al 2 o 3 : SiO 2 : Na 2 O: H 2 O=1:80:1.5:240, TEAOH / SiO 2 = 0...

Embodiment 2

[0054] (1) Preparation of amorphous silicon-aluminum precursor

[0055] The preparation concentration is 50gAl 2 o 3 / L sodium aluminate working solution, take SiO 2 28wt% sodium silicate solution, then diluted to a concentration of 100g SiO 2 / L sodium silicate working solution. Take 200mL of sodium aluminate working solution and place it in a gel-forming tank, then add 60mL of sodium silicate working solution, control the reaction temperature at 20°C, and feed CO with a concentration of 50v%. 2 gas, stop passing CO when the pH reaches 10.0 2 , then add 40mL of sodium silicate working solution, and ventilate and stabilize for 20 minutes to obtain an amorphous silicon-aluminum precursor. The amorphous silicon-alumina precursor is based on the total weight of silicon dioxide and aluminum oxide, and the content in terms of silicon dioxide is 50wt%.

[0056] (2) Preparation of gel

[0057] Press Al 2 o 3: SiO 2 : Na 2 O: H 2 O=1:90:1.7:260, TEAOH / SiO 2 = 0.060 total ...

Embodiment 3

[0064] (1) Preparation of amorphous silicon-aluminum precursor

[0065] The preparation concentration is 50gAl 2 o 3 / L sodium aluminate working solution, take SiO 2 28wt% sodium silicate solution, then diluted to a concentration of 100g SiO 2 / L sodium silicate working solution. Take 160mL of sodium aluminate working solution and place it in a gel-forming tank, then add 45mL of sodium silicate working solution, control the reaction temperature at 20°C, and feed CO with a concentration of 50v%. 2 gas, stop passing CO when the pH reaches 10.0 2 , then add 35mL of sodium silicate working solution, and then ventilate and stabilize for 20 minutes to obtain an amorphous silica-alumina precursor. The amorphous silica-alumina precursor is based on the total weight of silica and alumina, and the content in terms of silica is 50wt%.

[0066] (2) The preparation of the gel is the same as in Example 1, the difference is that: according to Al 2 o 3 : SiO 2 : Na 2 O: H 2 O=1:70:...

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Abstract

The invention discloses a lignin hydro-cracking catalyst which comprises an H beta molecular sieve and a hydrogenating active metal component, wherein the hydrogenating active metal component belongs to a group VIB and / or a group VIII; the pore volume of the catalyst is 0.5-0.8 mL / g, the total specific surface area is 600-800 m<2> / g, the mesoporous specific surface area is 400-450 m<2> / g, and the micropore specific surface area is 300-370 m<2> / g; the H beta molecular sieve has the following properties that the molar ratio of SiO2 to Al2O3 is 60:100, the specific surface area is 700-900 m<2> / g, the pore volume is 0.6-0.9 mL / g, and the relative crystallinity is 100-148 percent. The catalyst is prepared by adopting an impregnation method. The catalyst adopts a beta-type molecular sieve with high silica-alumina ratio, high crystallinity, large specific surface area and a special channel structure as an acidic component and has higher reaction activity and higher liquid yield for lignin hydro-cracking.

Description

technical field [0001] The invention relates to a lignin hydrocracking catalyst and a preparation method thereof, specifically a catalyst capable of being used in a lignin hydrocracking process to prepare high-performance bio-oil and a preparation method thereof. Background technique [0002] The demand for energy in human society is increasing continuously. However, the three non-renewable fossil energy sources such as coal, oil and natural gas that support the rapid development of the world economy have been exhausted; Ecological degradation and serious environmental problems. Therefore, it is imminent to develop high-efficiency, pollution-free or low-pollution renewable resources. Biomass energy is derived from biomass, which is a form of energy in which solar energy is stored in organisms in the form of chemical energy. Biomass energy on the earth has many advantages such as huge reserves, renewable and environmental protection. Lignin (also known as lignin, lignin) is...

Claims

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Application Information

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IPC IPC(8): B01J29/78C01B39/00C10G1/08
Inventor 于政敏孙晓艳樊宏飞王继锋
Owner CHINA PETROLEUM & CHEM CORP
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