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Multifunctional composite catalyst as well as preparation method and application thereof

A composite catalyst and multi-functional technology, applied in molecular sieve catalysts, chemical instruments and methods, preparation of liquid hydrocarbon mixtures, etc., to achieve good application prospects, prevent carbon deposition, and good stability

Active Publication Date: 2018-12-04
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently using CO 2 There are still very few research reports on the hydrogenation of aromatics

Method used

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  • Multifunctional composite catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 0.54g Mo(CH 3 COO) 2 , add 50ml of deionized water, stir at 60°C for 1h to form a solution, then add 3.75g of Zn(NO 3 ) 2 ·6H 2O was added to the above solution, stirred at 60 °C for 1 h, then 2.4 g of carbon nanotubes were added, and stirred at 70 °C for 10 h. The obtained solid-liquid mixture sample was moved to a vacuum drying oven and dried at 100°C for 10 hours. After the dried solid was ground, it was moved to a muffle furnace and heated at a rate of 2°C / min to 500°C for 10 hours. The calcined samples were placed in a tube furnace, fed with hydrogen gas at a rate of 2 °C / min to 300 °C for reduction, and the reduction time was 10 h. The resulting product is ZnO-MoO 3 (1 / 0.1).

[0034] Weigh 0.029g Ga(NO 3 ) 3 4.5H 2 O was added into 50ml of deionized water to form a solution, then 3g of H-ZSM-5 molecular sieve was added, and then the above solution was stirred at 40-90°C for 1-10 hours, and the obtained solid-liquid mixture was transferred to a vacuu...

Embodiment 2

[0038] Weigh 0.54g Mo(CH 3 COO) 2 , add 50ml of deionized water, stir at 60°C for 1h to form a solution, then add 1.45g of MnCO 3 Added to the above solution, stirred at 60°C for 1h, then added 2.4g of activated carbon, stirred at 70°C for 10h. The obtained solid-liquid mixture sample was moved to a vacuum drying oven and dried at 100°C for 10 hours. After the dried solid was ground, it was moved to a muffle furnace and heated at a rate of 2°C / min to 500°C for 10 hours. The calcined samples were placed in a tube furnace, fed with hydrogen gas at a rate of 2 °C / min to 350 °C for reduction, and the reduction time was 10 h. The resulting product is MnO 2 -MoO 3 (1 / 0.1).

[0039] Weigh 0.015g CaCO 3 Add 50ml of deionized water to make a solution, then add 3g of H-ZSM-5 molecular sieve, then continue to stir the above solution at 40-90°C for 1-10h, and move the obtained solid-liquid mixture into a vacuum drying oven at 60-120°C Drying, the time is 1-24h, the dried sample is ...

Embodiment 3

[0043] Weigh 0.54g Mo(CH 3 COO) 2 , add 50ml deionized water, stir at 60°C for 1h to form a solution, then add 2.47g Cr 2 (SO 4 ) 3 ·6H 2 O was added to the above solution, stirred at 60°C for 1h, then 2.4g of carbon black was added, and stirred at 70°C for 10h. The obtained solid-liquid mixture sample was moved to a vacuum drying oven and dried at 100°C for 10 hours. After the dried solid was ground, it was moved to a muffle furnace and heated at a rate of 2°C / min to 500°C for 10 hours. The calcined samples were placed in a tube furnace, fed with hydrogen gas at a rate of 2 °C / min to 350 °C for reduction, and the reduction time was 10 h. The resulting product is CrO 3 -MoO 3 (1 / 0.1).

[0044] Weigh 0.027g Zn(NO 3 ) 2 ·6H 2 O was added into 50ml of deionized water to form a solution, then 3g of H-ZSM-5 molecular sieve was added, and then the above solution was stirred at 40-90°C for 1-10 hours, and the obtained solid-liquid mixture was transferred to a vacuum drying...

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Abstract

The invention discloses a multifunctional composite catalyst as well as a preparation method and application thereof. The multifunctional composite catalyst is composed of a molybdenum-containing composite metal oxide and a multi-stage pore zeolite molecular sieve modified with and a metal element. The preparation method comprises the following steps: adding water into a molybdenum salt, and performing stirring to prepare a solution A; adding a salt containing the A element into the solution A, and continuing stirring to obtain a solution B; adding a hard templating agent into the solution B,and continuing stirring to obtain a solution C; continuing to stir the solution C at temperature of 40-90 DEG C to obtain a solid-liquid mixture; adding a salt containing at least one element selectedfrom the group consisting of a group IIA element, a group IIIA element, a group IIB element, a group IIIB element, a group IVB element, a group VIIB element and the like into water to prepare a solution D, continuing to stir the solution D to obtain a solid-liquid mixture, and performing drying; and performing mixed grinding on the AOx-MoO3 and the metal modified molecular sieve, and performing preforming molding to obtain a sample, wherein the sample is the multifunctional composite catalyst.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a multifunctional composite catalyst and its preparation method and application. Background technique [0002] Isoparaffins especially containing C 5 -C 12 The composition of isoparaffins is an important component of high-octane gasoline. On the other hand, aromatic hydrocarbons, as one of the most important bulk chemicals, have a wide range of applications. With the rapid development of social economy, the demand for isoparaffins and aromatics is increasing day by day. In traditional industrial processes, isoparaffins and aromatics are mainly obtained through catalytic reforming of naphtha and thermal cracking of petroleum. However, due to the limited reserves of petroleum resources, it is urgent to develop the conversion of non-oil-based carbon resources to produce isoparaffins and aromatics to meet the increasingly serious contradiction between supply and demand. [0003] In rece...

Claims

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Application Information

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IPC IPC(8): B01J29/48C10G2/00
CPCB01J23/002B01J29/48B01J2229/186C10G2/334
Inventor 康金灿汪旸刘志铭张庆红王野
Owner XIAMEN UNIV
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