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

Catalyst for preparing propylene through propane dehydrogenation, and preparation method and application thereof

A propane dehydrogenation and catalyst technology, applied in the direction of catalyst activation/preparation, catalyst, carbon compound catalyst, etc., can solve the problems of Pt-Sn catalyst deactivation, strong acidity of carrier, alloying, etc., and achieve the suppression of Pt sintering and Sn precipitation , Reduce the acidity of the carrier, improve the catalytic performance and stability

Pending Publication Date: 2020-05-01
REZEL CATALYSTS CO LTD
View PDF6 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In summary, although Pt-Sn-based catalysts are currently the main catalysts for propane dehydrogenation to propylene, and Sn can improve the propylene selectivity and propylene yield of the catalyst, the support acidity is still strong, the Pt particles are unstable, and the influence of Sn on Pt Alloying and other problems are still easy to cause Pt-Sn 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 preparing propylene through propane dehydrogenation, and preparation method and application thereof
  • Catalyst for preparing propylene through propane dehydrogenation, and preparation method and application thereof
  • Catalyst for preparing propylene through propane dehydrogenation, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment prepares catalyst 1, Pt-Sn-K-Y / Al 2 o 3 , and its catalytic performance of propane dehydrogenation to propylene was tested.

[0041] Preparation: 1) configure H with a mass concentration of 0.02g / g 2 PtCl 6 ·6H 2 O solution, SnCl with a mass concentration of 0.04g / g 2 2H 2 O solution. Take H respectively 2 PtCl 6 ·6H 2 O solution and SnCl 2 2H 2 O solution 4.075g and 0.729g, then add concentrated hydrochloric acid and deionized water to make the volume of Pt-Sn impregnation solution equal to 10g Al 2 o 3 The total water absorption of the carrier, and the mass of concentrated hydrochloric acid is 8.3% of the mass of the impregnation solution. After stirring evenly, impregnate 10g Al 2 o 3 ball carrier. After soaking for 4 hours, vacuum-dry at 100°C for 8 hours, and bake at 600°C for 4 hours;

[0042] 2) Configure KNO with a mass concentration of 0.07g / g 3 Solution, YCl with a mass concentration of 0.312g / g 3 solution. Take KNO respectivel...

Embodiment 2

[0045] This embodiment prepares catalyst 2, Pt-Sn-K-La / Al 2 o 3 , and its catalytic performance of propane dehydrogenation to propylene was tested.

[0046] Preparation: 1) configure H with a mass concentration of 0.02g / g 2 PtCl 6 ·6H 2 O solution, SnCl with a mass concentration of 0.04g / g 2 2H 2 O solution. Take H respectively 2 PtCl 6 ·6H 2 O solution and SnCl 2 2H 2 O solution 4.075g and 0.729g, then add concentrated hydrochloric acid and deionized water to make the volume of Pt-Sn impregnation solution equal to 10g Al 2 o 3 The total water absorption of the carrier, and the mass of concentrated hydrochloric acid is 8.3% of the mass of the impregnation solution. After stirring evenly, impregnate 10g Al 2 o 3 ball carrier. After soaking for 4 hours, vacuum-dry at 100°C for 8 hours, and bake at 600°C for 4 hours;

[0047] 2) Configure KNO with a mass concentration of 0.07g / g 3 Solution, LaCl with a mass concentration of 0.271g / g 3 solution. Take KNO respect...

Embodiment 3

[0050] This embodiment prepares catalyst 3, Pt-Sn-K-Ce / Al 2 o 3 , and its catalytic performance of propane dehydrogenation to propylene was tested.

[0051] Preparation: 1) configure H with a mass concentration of 0.02g / g 2 PtCl 6 ·6H 2 O solution, SnCl with a mass concentration of 0.04g / g 2 2H 2 O solution. Take H respectively 2 PtCl 6 ·6H 2 O solution and SnCl 2 2H 2 O solution 4.075g and 0.729g, then add concentrated hydrochloric acid and deionized water to make the volume of Pt-Sn impregnation solution equal to 10g Al 2 o 3 The total water absorption of the carrier, and the mass of concentrated hydrochloric acid is 8.3% of the mass of the impregnation solution. After stirring evenly, impregnate 10g Al 2 o 3 ball carrier. After soaking for 4 hours, vacuum-dry at 100°C for 8 hours, and bake at 600°C for 4 hours;

[0052] 2) Configure KNO with a mass concentration of 0.07g / g 3 Solution, Ce(NO with a mass concentration of 0.2g / g 3 ) 3 ·6H 2 O solution. Tak...

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 catalyst for preparing propylene through propane dehydrogenation, and a preparation method and an application thereof. The catalyst comprises a carrier, and an active component and an auxiliary agent which are loaded on the carrier, wherein the carrier is an alumina ball; the active component is platinum group metal; and the auxiliary agent comprises three parts, i.e., rare earth elements (Y, La, Ce, Pr and Nd), tin and alkali metal elements (Li, Na and K. When the catalyst is used for a propane dehydrogenation reaction for propylene preparation, high propane conversion rate and propylene selectivity can be obtained.

Description

technical field [0001] The invention relates to the field of industrial catalyst preparation, in particular to a catalyst for propane dehydrogenation to propylene, a preparation method and application thereof. Background technique [0002] Propylene is one of the important raw materials for the production of industrial products such as acrolein, polypropylene, acetone, polyacrylonitrile and propylene oxide. The traditional propylene production process is fluid catalytic cracking and steam cracking of naphtha and light oil. With the rapid consumption of fossil energy, traditional propylene production methods cannot meet the growing demand for propylene. Therefore, new propylene production processes have been developed, such as propane dehydrogenation (PDH), methanol to olefins (MTO) and Fischer-Tropsch to olefins (FTO). Among them, the PDH process specializes in the production of propylene rather than mixed olefins, and the device is easy to be large-scale Chemicalization, ...

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 Applications(China)
IPC IPC(8): B01J23/63C07C5/333C07C11/06
CPCB01J23/63C07C5/3337C07C2523/63C07C11/06Y02P20/52B01J21/04B01J37/0238B01J37/0242B01J35/51B01J37/0205B01J37/0236B01J37/024B01J37/088B01J35/50
Inventor 卓润生张辰张平杨光友刘新生
Owner REZEL CATALYSTS CO LTD
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