Supercharge Your Innovation With Domain-Expert AI Agents!

Catalyst for reforming CO2 and CH4 to synthesize gas and preparation method of catalyst

A catalyst and synthesis gas technology, applied in hydrogen/synthesis gas production, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of Ni loss of active components, reduction of active sites, loss of active components, etc. Achieve high conversion efficiency, high-efficiency catalytic reaction, and long service life

Inactive Publication Date: 2016-06-29
张川川
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Ni-based catalysts are often deactivated due to carbon deposition, sintering, loss of active components or metal oxidation, and the deactivation reasons of Ni-based catalysts prepared by different methods are also different.
Moreover, the Ni-based supported catalyst Ni / A1 2 o 3 The active component Ni is easy to react with the carrier to form NiA1 2 o 4 , will undoubtedly cause the loss of the active component Ni, thereby reducing the active sites and leading to catalyst deactivation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst for reforming CO2 and CH4 to synthesize gas and preparation method of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] for CO 2 and CH 4 Catalyst for recombination into gas, consisting of the following mass fractions of raw materials: Ni / γ-Al 2 o 3 27%, Ni / MgO23%, Ce / ZrO 2 18%, carbon component 32%.

[0023] above for CO 2 and CH 4 The preparation steps of the catalyst for reforming into gas are as follows:

[0024] (1) Nickel nitrate is stirred and dispersed in methanol according to a solid-to-liquid ratio of 1:5, and is made into a nickel nitrate dispersion liquid with a concentration of 4mol / L; cerium sulfate is stirred and dispersed in methanol according to a solid-to-liquid ratio of 1:5, Be made into the cerium sulfate dispersion liquid that concentration is 4mol / L;

[0025] (2) γ-Al pre-calcined at 600°C 2 o 3 As a carrier, add it to the nickel nitrate dispersion at a solid-to-liquid ratio of 1:10, stir continuously, and ultrasonically treat it at 50°C for 30 minutes. Dry for 24 hours to obtain a nickel-based catalyst precursor; bake at 850°C for 5 hours, and reduce it a...

Embodiment 2

[0031] for CO 2 and CH 4 Catalyst for recombination into gas, consisting of the following mass fractions of raw materials: Ni / γ-Al 2 o 3 31%, Ni / MgO21%, Ce / ZrO 2 19%, carbon component 29%.

[0032] above for CO 2 and CH 4 The preparation steps of the catalyst for reforming into gas are as follows:

[0033] (1) Stir and disperse nickel chloride in n-propanol according to a solid-to-liquid ratio of 1:6 to form a nickel chloride dispersion with a concentration of 5mol / L; stir cerium chloride according to a solid-to-liquid ratio of 1:6 Disperse in n-propanol to prepare a cerium chloride dispersion with a concentration of 5mol / L;

[0034] (2) γ-Al pre-calcined at 600°C 2 o 3 As a carrier, it was added to the nickel chloride dispersion according to the ratio of solid to liquid ratio of 1:11, continuously stirred, ultrasonically treated at 55°C for 35min, left at room temperature for 21h, filtered, and transferred to a vacuum dryer at 125°C Dry at 880°C for 22h to prepare nic...

Embodiment 3

[0040] for CO 2 and CH 4 Catalyst for recombination into gas, consisting of the following mass fractions of raw materials: Ni / γ-Al 2 o 3 35%, Ni / MgO19%, Ce / ZrO 2 20%, carbon component 26%.

[0041] above for CO 2 and CH 4 The preparation steps of the catalyst for reforming into gas are as follows:

[0042] (1) Nickel acetate is stirred and dispersed in acetone according to a solid-to-liquid ratio of 1:7 to form a nickel salt dispersion with a concentration of 6mol / L; cerium nitrate is stirred and dispersed in acetone according to a solid-to-liquid ratio of 1:7, Prepare a cerium nitrate dispersion with a concentration of 6mol / L;

[0043] (2) γ-Al pre-calcined at 600°C 2 o 3 As a carrier, add it to the nickel acetate dispersion at a solid-to-liquid ratio of 1:12, stir continuously, and ultrasonically treat it at 60°C for 40 minutes, let it stand at room temperature for 24 hours, filter it, and transfer it to a vacuum desiccator at 128°C. Dry for 24 hours to prepare a n...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for CO 2 and CH 4 Catalyst for recombination into gas and preparation method thereof, by Ni / γ-Al 2 o 3 , Ni / MgO, Ce / ZrO 2 and carbon composition, Ni / γ‑Al 2 o 3 Composed of soluble nickel salt and γ‑Al 2 o 3 Prepared by sintering and reduction, Ni / MgO is prepared by roasting and reducing soluble nickel salt and MgO, Ce / ZrO 2 By soluble cerium salt and ZrO 2 It is prepared by roasting and reduction. The charcoal component is made of charcoal materials by boiling, cooking and drying. The above materials are mixed according to the proportion, shaped and granulated, and roasted. Catalyst of the present invention compares common Ni base catalyst, to CO 2 Reform CH 4 The reaction has an obvious and efficient catalytic reaction, high conversion efficiency, and is not easy to sinter, not easy to deposit carbon, high catalytic activity and stability, good use effect, and long service life.

Description

technical field [0001] The invention relates to the field of chemical catalysts, in particular to a 2 and CH 4 Catalyst for reforming synthetic gas and method for its preparation. Background technique [0002] Currently, synthesis gas is mainly produced by steam reforming of methane. However, in the case of high water-gas ratio, the energy consumption of the reaction is high, and the H in the product gas 2 / CO ratio is higher. while CH 4 CO = reforming reaction, using CO 2 Replace water vapor with CH 4 The reaction can reduce the energy consumption of the reaction and correspondingly reduce the production cost of the synthesis gas. More importantly, the H of the synthesis gas produced is 2 The / CO ratio can be flexibly adjusted, and it can be used in oxo synthesis, F-T synthesis and other processes to prepare clean fuels and various chemical products. This process can simultaneously use two kinds of greenhouse gases as carbon sources, which is of great significance f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J23/83C01B3/40
CPCY02P20/52B01J23/002B01J23/83B01J2523/00C01B3/40C01B2203/0238C01B2203/1058C01B2203/1241B01J2523/22B01J2523/31B01J2523/48
Inventor 张川川
Owner 张川川
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com