Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Catalyst for oxidizing ethane and dehydrogenating ethylene with carbon dioxide and preparation method thereof

A carbon dioxide and ethane oxidation technology, applied in carbon compound catalysts, physical/chemical process catalysts, catalysts, etc., can solve problems such as weak carbon dioxide adsorption capacity and poor hydrothermal stability

Active Publication Date: 2021-12-14
DALIAN UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of poor hydrothermal stability and weak carbon dioxide adsorption capacity of the existing supported Cr catalyst carrier, the present invention provides a catalyst for producing ethylene and synthesis gas by oxidizing ethane and dehydrogenating carbon dioxide and a preparation method thereof

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 oxidizing ethane and dehydrogenating ethylene with carbon dioxide and preparation method thereof
  • Catalyst for oxidizing ethane and dehydrogenating ethylene with carbon dioxide and preparation method thereof
  • Catalyst for oxidizing ethane and dehydrogenating ethylene with carbon dioxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 0.93g of Cr(NO 3 ) 3 9H 2 O was dissolved in 24g of deionized water, and after stirring evenly, 10g of SSZ-13 microporous molecular sieve carrier was added, and then soaked in a constant temperature water bath at 80°C for 2h, and then the obtained mixture was centrifuged, and the separated solid was dried at 110°C for 10h, and then 540 ℃ calcination for 3 hours to obtain CO 2 Oxygen C 2 h 6 Dehydrogenation to C 2 h 4 The catalyst, the mass fraction of chromium in the catalyst is 0.3%, denoted as Cr 0.3 / SSZ-13.

Embodiment 2

[0027] 1.56g, 2.21g and 4.94g of Cr(NO 3 ) 3 9H 2 O was dissolved in 24g of deionized water to prepare solutions with different Cr content. After stirring evenly, 10g of SSZ-13 microporous molecular sieve carrier was added, and then soaked in a constant temperature water bath at 80°C for 2h, and then the obtained mixture was centrifuged to separate the obtained The solid was dried at 110°C for 10h, and then calcined at 540°C for 3h to obtain CO 2 Oxygen C 2 h 6 Dehydrogenation to C 2 h 4 The catalyst, the mass fraction of chromium element in the catalyst is 0.5%, 0.7% and 1.5%, respectively denoted as Cr 0.5 / SSZ-13,Cr 0.7 / SSZ-13 and Cr 1.5 / SSZ-13.

Embodiment 3

[0029] 62.18g of Cr(NO 3 ) 3 9H 2 O was dissolved in 24g of deionized water, and after stirring evenly, 10g of SSZ-13 microporous molecular sieve carrier was added, and then soaked in a constant temperature water bath at 80°C for 2h, and then the obtained mixture was centrifuged, and the separated solid was dried at 110°C for 10h, and then 540 ℃ calcination for 3 hours to obtain CO 2 Oxygen C 2 h 6 Dehydrogenation to C 2 h 4 The catalyst, the mass fraction of chromium in the catalyst is 10%, denoted as Cr 10 / SSZ-13.

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 supported catalyst for producing ethylene by oxidizing ethane and dehydrogenating carbon dioxide, which comprises a molecular sieve carrier and an active component. The molecular sieve carrier is SSZ‑13 microporous molecular sieve with a pore size range of 0.2‑0.4 nm; the activity The component is chromium oxide, and the mass fraction of chromium in the catalyst is 0.3-10% based on the weight of chromium. SSZ‑13 microporous molecular sieve has the advantages of small pores, high hydrothermal stability, and high specific surface area. It has more surface protonic acid centers and exchangeable cations. 2 Has a better affinity for more CO 2 Molecules can participate in the activation of ethane and the subsequent conversion reaction, the introduction of chromium in this carrier to obtain high ethane and CO 2 A catalyst with co-transformation capability can effectively solve the catalyst CO in the prior art 2 The problem of weak adsorption capacity and poor hydrothermal stability of the catalyst carrier.

Description

technical field [0001] The invention belongs to the technical field of preparing ethylene, and in particular relates to a catalyst for oxidizing ethane with dehydrogenation of carbon dioxide to prepare ethylene and a preparation method thereof. Background technique [0002] Carbon dioxide is the final oxide of carbon and carbon-containing compounds, and it is also the most abundant carbon source in nature. Among the "greenhouse gases" that cause global warming, carbon dioxide contributes 55% to the greenhouse effect. Therefore, it is very important to carry out research on the resource utilization of carbon dioxide. Carbon dioxide molecules are very stable, and a large number of studies have shown that hydrogen can effectively activate the carbon-oxygen bonds of carbon dioxide molecules, which is a hot research direction for resource utilization of carbon dioxide. However, the high cost of industrial hydrogen production technology leads to high cost of raw materials, which ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/78C07C5/42C07C11/04
CPCC07C5/42B01J29/783C07C2529/78B01J2229/20C07C11/04Y02P20/52
Inventor 谢宏彬杨金鹏刘家旭贺宁郭洪臣
Owner DALIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com