Preparation method of Mo-SBA-15 molecular sieve and hydrogenation catalyst

A hydrogenation catalyst, mo-sba-15 technology, applied in molecular sieve catalysts, molecular sieves and base exchange compounds, chemical instruments and methods, etc., can solve the problems of low price, limited practical application, low specific surface area, etc. degree, improve the introduction efficiency, and increase the effect of the hydrothermal treatment temperature

Active Publication Date: 2017-07-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

γ-Al 2 o 3 Good mechanical properties and regeneration performance, low price, but γ-Al 2 o 3 The carrier has the following three problems: one is γ-Al 2 o 3 There is a strong interaction with the active components; the second is γ-Al 2 o 3 The specific surface area is low; the third is γ-Al 2 o 3 Only L acid centers, no B acid centers, which limit its application in deep desulfurization and dearomatization catalysts for diesel
Microporous zeolite molecular sieves have become important catalysts in the field of petrochemicals due to their shape-selective catalysis and the presence of different acid centers in the pores, but their small pore size (less than 2.0nm) severely limits their use in reactions involving organic macromolecules practical applications, and ordered mesoporous materials can effectively meet the needs of this aspect

Method used

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  • Preparation method of Mo-SBA-15 molecular sieve and hydrogenation catalyst
  • Preparation method of Mo-SBA-15 molecular sieve and hydrogenation catalyst
  • Preparation method of Mo-SBA-15 molecular sieve and hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Put 1g of P123 in a flat-necked flask filled with 40mL of 1mol / L HCl, then add 3g of HAc, then put the flat-necked flask in a water bath at 30°C and stir for 3 hours to dissolve P123; then add 6.24g of TEOS, Stir for 24 hours; take out the white suspension, filter it with suction and wash it with deionized water three times, then transfer it to 60mL of deionized water dissolved with 2.47g of ammonium molybdate, then add ammonia water dropwise to adjust the pH value to 0, and pre- After hydrolysis for 2 hours, pour the solution into a 100mL autoclave lined with polytetrafluoroethylene, and conduct a hydrothermal treatment at 110°C for 12 hours; suction-filter and wash the gel sample in the kettle for 3 times, and then dry it at room temperature. Calcined at 550°C for 5h to obtain the final Mo-SBA-15 sample. Take 5g of 20-40mesh sample, and then prepare a nickel nitrate solution containing 0.7g of nickel nitrate, add it dropwise to Mo-SBA-15 to make it soak, leave it at r...

Embodiment 2

[0035] Put 2g of P123 in a flat-necked flask filled with 50mL of 1mol / L HCl, then add 3.2g of HAc, then put the flat-necked flask in a water bath at 35°C and stir for 3 hours to dissolve P123; then add 3g of TEOS, Stir for 24 hours; take out the white suspension, filter it with suction and wash it with deionized water three times, transfer it to 60mL deionized water dissolved with 2.47g ammonium molybdate, then add ammonia water dropwise to adjust the pH value to 0.2, and pre- After hydrolysis for 2 hours, pour the solution into a 100mL autoclave lined with polytetrafluoroethylene, and conduct a hydrothermal treatment at 130°C for 15 hours; suction filter and wash the gel sample in the kettle for 3 times, and then dry it at room temperature. Calcined at 550°C for 5h to obtain the final Mo-SBA-15 sample. Take 5g of a sample of 20-40 mesh, and then prepare a nickel nitrate solution containing 0.7g of nickel nitrate, add it dropwise to Mo-SBA-15 to make it soak, leave it at room ...

Embodiment 3

[0037] Put 3g of P123 in a flat-necked flask filled with 60mL of HCl with a concentration of 1.5mol / L, then add 3.8g of HAc, then put the flat-necked flask in a water bath at 38°C and stir for 3 hours to dissolve P123; then add 4g of TEOS, Stir in the middle for 24 hours; take out the white suspension, filter it with suction and wash it with deionized water three times, transfer it to 60mL deionized water dissolved with 2.47g ammonium molybdate, then add ammonia water dropwise to adjust the pH value to 0.4, at 38°C After pre-hydrolysis for 2 hours, pour the solution into a 100mL autoclave lined with polytetrafluoroethylene, and conduct a hydrothermal treatment at 150°C for 18 hours; suction-filter and wash the gel-like sample in the kettle for 3 times, and then dry it at room temperature , and fired at 550°C for 5h to obtain the final Mo-SBA-15 sample. Take 5g of a sample of 20-40 mesh, and then prepare a nickel nitrate solution containing 0.7g of nickel nitrate, add it dropwi...

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Abstract

The invention relates to a preparation method of a Mo-SBA-15 molecular sieve. The compounding steps include adding a mesoporous material SBA-15, which is self-assembled in a strong-acid system but not subjected to hydro-thermal treatment, into a solution containing a VIB-family metal precursor, adjusting the reaction system pH value to 0-2, and subjecting the solution to high-temperature hydrothermal crystallization to obtain a sample, namely the SBA-15 molecular sieve containing VIB metal. The obtained Mo-SBA-15 molecular sieve has the advantages of high loading capacity, high dispersity and highly-ordered mesopores. By taking the Mo-SBA-15 molecular sieve as a carrier, a catalyst with high large specific surface area, excellent reactive metal dispersity, high acidity and excellent hydrodesulphurization performance can be obtained only via a VIII-family metal impregnation process.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and in particular relates to a preparation method of Mo-based SBA-15 molecular sieve and loaded hydrogenation catalyst used for refining petrochemical products. Background technique [0002] Hydrofining technology is the most important means to produce low-sulfur gasoline and diesel, and hydrofining catalyst is the core technology of hydrofining process. An ideal diesel hydrotreating catalyst support should have a large specific surface area, concentrated and large pore distribution, suitable acid centers and suitable interaction with active components. With group VIB metal W or Mo as the main active component, group VIII metal Ni or Co as auxiliary active component, and γ-Al 2 o 3 The supported catalyst is a hydrorefining catalyst widely used commercially. γ-Al 2 o 3 Good mechanical properties and regeneration performance, low price, but γ-Al 2 o 3 The carrier has the following three...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/08B01J29/03B01J35/10C10G45/12
CPCB01J29/0341B01J35/10B01J2229/18C01B39/085C01P2002/72C10G45/12C10G2300/202
Inventor 李阳鲍晓军兰玲潘大海姜增琨鞠雅娜葛少辉钟海军朴佳锐赵秦峰袁晓亮吕忠武王书芹康宏敏
Owner PETROCHINA CO LTD
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