A three-dimensional porous structure nickel-modified hy molecular sieve oxygen carrier and its preparation and application

A three-dimensional, porous structure technology, applied in the direction of molecular sieve catalysts, physical/chemical process catalysts, bulk chemical production, etc., can solve the problems of complex liquid phase product components, complex refining process, difficult large-scale application, etc., to achieve good metal Particle dispersibility and catalytic effect, simple process, low cost effect

Active Publication Date: 2021-09-24
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The liquid phase products produced by pyrolysis are complex in composition and contain various harmful substances including tar, benzene and benzene derivatives, and cannot be used directly
In addition, the liquid phase product has high water content and is mostly acidic, and it is easy to separate during storage. It needs further deep processing to make chemicals to have application prospects, and the refining process is complicated, which greatly increases the cost of application. In actual production Difficult to apply on a large scale

Method used

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  • A three-dimensional porous structure nickel-modified hy molecular sieve oxygen carrier and its preparation and application
  • A three-dimensional porous structure nickel-modified hy molecular sieve oxygen carrier and its preparation and application
  • A three-dimensional porous structure nickel-modified hy molecular sieve oxygen carrier and its preparation and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Oxygen carrier preparation:

[0048] Take 29.081g Ni(NO 3 ) 2 ·6H 2O, 52.821g NaY molecular sieve (silicon to aluminum ratio is 4.8) and 106.89g NH 4 Dissolve Cl in 1L of distilled water, stir the mixture in the beaker with a magnetic stirrer at a speed of 550r / min at room temperature for 2 hours, then slowly drop 1mol / L ammonium carbonate solution into the solution with a rubber dropper until the solution pH = 3.4, continue to stir until the solution becomes a colloidal suspension. Dry the suspension at 105°C for 12h in a blast drying oven, put the dried solid into a muffle furnace, and calcinate at 400°C for 2h and then at 900°C for 4h in an air atmosphere. After cooling to room temperature, a Ni / HY oxygen carrier is obtained, wherein the mass content of Ni is 10%, and the mass content of HY molecular sieve is 90%.

[0049] Catalyst activity evaluation:

[0050] The chemical chain reformation reaction of wood vinegar is carried out on a small fixed bed device. F...

Embodiment 2

[0054] Oxygen carrier preparation:

[0055] Take 29.081g Ni(NO 3 ) 2 ·6H 2 O, 23.455g NaY molecular sieve (silicon to aluminum ratio is 4.8) and 106.89g NH 4 Dissolve Cl in 1L of distilled water, stir the mixture in the beaker with a magnetic stirrer at a speed of 550r / min at room temperature for 2 hours, then slowly drop 1mol / L ammonium carbonate solution into the solution with a rubber dropper until the solution pH = 3.4, continue to stir until the solution becomes a colloidal suspension. Dry the suspension at 105°C for 12h in a blast drying oven, put the dried solid into a muffle furnace, and calcinate at 400°C for 2h and then at 900°C for 4h in an air atmosphere. After cooling to room temperature, a Ni / HY oxygen carrier was obtained, wherein the mass content of Ni was 20%, and the mass content of HY molecular sieve was 80%.

[0056] Catalyst activity evaluation:

[0057] The chemical chain reformation reaction of wood vinegar is carried out on a small fixed bed devic...

Embodiment 3

[0059] Oxygen carrier preparation:

[0060] Take 29.081g Ni(NO 3 ) 2 ·6H 2 O, 23.455g NaY molecular sieve (silicon to aluminum ratio is 4.8) and 106.89g NH 4 Dissolve Cl in 1L of distilled water, stir the mixture in the beaker with a magnetic stirrer at a speed of 550r / min at room temperature for 2 hours, then slowly drop 1mol / L ammonium carbonate solution into the solution with a rubber dropper until the solution pH = 3.4, continue to stir until the solution becomes a colloidal suspension. Dry the suspension at 105°C for 12h in a blast drying oven, put the dried solid into a muffle furnace, and calcinate at 400°C for 2h and then at 900°C for 4h in an air atmosphere. After cooling to room temperature, a Ni / HY oxygen carrier was obtained, wherein the mass content of Ni was 20%, and the mass content of HY molecular sieve was 80%.

[0061] Catalyst activity evaluation:

[0062] The chemical chain reformation reaction of wood vinegar is carried out on a small fixed bed devic...

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Abstract

The invention discloses a nickel-modified HY molecular sieve oxygen carrier with a three-dimensional porous structure and its preparation and application. In the present invention, HY molecular sieve is used as a carrier, and transition metals are introduced to modify the molecular sieve at the same time. The loading capacity of the transition metal in the obtained metal-modified HY oxygen carrier is 5-25%, which improves the catalytic and oxygen-carrying capacity of the three-dimensional porous HY molecular sieve. It can realize the conversion of pyrolysis liquid phase products into hydrogen-rich synthesis gas under certain reaction conditions. By adjusting the reaction conditions, the H in the synthesis gas can be 2 The ratio of / CO is regulated at about 0.5-3.0, which is beneficial to further Fischer-Tropsch synthesis.

Description

technical field [0001] The invention belongs to the technical field of syngas reforming by chemical chain reforming, and in particular relates to a nickel-modified HY molecular sieve oxygen carrier with a three-dimensional porous structure and its preparation and application. Background technique [0002] Hydrogen, which has the advantages of high energy density and zero carbon emissions after combustion, is considered as an environmentally friendly and clean energy carrier. Hydrogen can be used in many industries, such as fertilizer industry, petrochemical industry, fuel cells, etc. At the same time, hydrogen is also used as a clean energy carrier for a series of applications, such as transportation, heating and energy storage. Therefore, among many energy sources, hydrogen energy has attracted widespread attention due to its environmental friendliness. At present, almost all hydrogen production in the world comes from fossil energy, but CO is also produced in the process....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/14C01B3/32C01B3/40
CPCB01J29/146B01J2229/186C01B3/326C01B3/40C01B2203/0233Y02P20/52
Inventor 胡志锋苗桢武蒋恩臣吴家威
Owner SOUTH CHINA AGRI UNIV
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