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

Propane dehydrogenation catalyst, and preparation method and application thereof

A technology for propane dehydrogenation and catalyst, which is applied to catalysts, carbon compound catalysts, chemical instruments and methods, etc., can solve problems such as reducing the content of Pt, and achieve the effects of improving olefin selectivity, favorable for dispersion and high thermal stability.

Pending Publication Date: 2018-05-11
YINGKOU XIANGYANG CATALYST
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, domestic research on propane dehydrogenation catalysts mainly focuses on the optimization of Pt-based catalysts. The Pt content of the active components of the catalysts is about 0.3-0.6%. There are few reports on methods to reduce the Pt content and maintain the catalyst activity.

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
  • Propane dehydrogenation catalyst, and preparation method and application thereof
  • Propane dehydrogenation catalyst, and preparation method and application thereof
  • Propane dehydrogenation catalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Weigh 4.0g and crush to 20-40 mesh θ-Al 2 o 3 Carrier particles (20-40 mesh particles, pore volume 0.49cm 3 / g, specific surface area 81m 2 / g, the following examples and comparative examples all use the carrier), at 60 ° C equal-volume immersion containing a certain amount of H 2 PtCl 6 immersion in aqueous solution for 2 hours, dried at 100°C for 6 hours, and then fired in a muffle furnace at 500°C for 4 hours to obtain θ-Al with 0.01% Pt loading 2 o 3 carrier.

[0037] θ-Al with 0.01% Pt loading 2 o 3 Carriers with In(NO 3 ) 3 , Ga(NO 3 ) 3 The aqueous solution was mixed and impregnated for 2h, dried at 100°C for 6h, and then calcined in a muffle furnace at 600°C for 6h, H at 600°C 2 Medium reduction for 2h to obtain the catalyst. The loading amount of each component in the catalyst based on the alumina carrier is: 0.01wt% of Pt, 0.25wt% of In, and 1.0wt% of Ga, and the obtained catalyst is designated as Cat-1.

[0038] Evaluation conditions: catalyst m...

Embodiment 2

[0040] Weigh 4.0g and crush to 20-40 mesh θ-Al 2 o 3 Carrier particles (20-40 mesh particles, pore volume 0.49cm 3 / g, specific surface area 81m 2 / g, the following examples and comparative examples all use the carrier), at 60 ° C equal volume immersion containing a certain amount of KNO 3 immersion in aqueous solution for 2 hours, dried at 100°C for 6 hours, and then calcined in a muffle furnace at 500°C for 4 hours to obtain θ-Al with 0.5% K loading 2 o 3 carrier.

[0041] θ-Al with 0.5% K loading 2 o 3 carrier with H 2 PtCl 6 , In(NO 3 ) 3 , Ga(NO 3 ) 3 The aqueous solution was mixed and impregnated for 2h, dried at 100°C for 6h, and then calcined in a muffle furnace at 600°C for 6h, H at 600°C 2 Medium reduction for 2h to obtain the catalyst. The loading amount of each component in the catalyst based on alumina carrier is: 0.03wt% of Pt, 0.5wt% of K, 1.0wt% of Ga, 0.25wt% of In, and the obtained catalyst is designated as Cat-2.

Embodiment 3

[0043] Weigh 4.0g of θ-Al 2 o 3 Carrier, immersed in 20mL of a certain amount of KNO at 60°C 3 immersion in aqueous solution for 2 hours, dried at 100°C for 6 hours, and then calcined in a muffle furnace at 500°C for 4 hours to obtain θ-Al with 0.5% K loading 2 o 3 carrier.

[0044] θ-Al with 0.5% K loading 2 o 3 carrier with H 2 PtCl 6 , In(NO 3 ) 3 Immerse in an equal volume of aqueous solution for 2 hours, dry at 100°C for 6 hours, and then bake in a muffle furnace at 600°C for 6 hours. 2 Medium reduction for 2h to obtain the catalyst. The loading amount of each component in the catalyst based on the alumina carrier is: 0.03wt% of Pt, 0.5wt% of K, and 0.25wt% of In, and the obtained catalyst is designated as Cat-3.

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 propane dehydrogenation catalyst, and a preparation method and an application thereof. The propane dehydrogenation catalyst adopts theta-Al2O3 as a carrier, metal componentsare supported on the carrier, Pt and In in the metal components are necessary components, K and / or Ga are / is supported or not supported on the carrier as an assistant, Pt (by elemental Pt) accounts for 0.005-0.2% of the weight of the theta-Al2O3 carrier, In (by elemental In) accounts for 0.1-2.0% of the weight of the theta-Al2O3 carrier, K (by elemental K) accounts for 0-2.0% of the weight of thetheta-Al2O3 carrier, and Ga (by elemental Ga) accounts for 0-2.0% of the weight of the theta-Al2O3 carrier. The catalyst is prepared through a stepwise impregnation or co-impregnation technology. Thepropane dehydrogenation catalyst prepared through the method has a good propane dehydrogenation reaction performance; and compared with traditional Pt-based propane dehydrogenation catalysts, the catalyst in the invention has the advantages of great reduction of the load capacity of the precious metal Pt, and great reduction of the production cost.

Description

technical field [0001] The invention belongs to the field of catalysts and preparation thereof, in particular to a θ-Al 2 o 3 It is a propane dehydrogenation catalyst with low Pt loading and its preparation method and application. Background technique [0002] Propylene is a very important basic chemical raw material, which can be used to produce chemical raw materials such as polypropylene, acrylonitrile, phenol and propylene oxide, and its demand has increased significantly in recent years. However, the production capacity of conventional steam cracking and FCC technologies cannot meet the rapidly growing demand for propylene, and new propylene production technologies are urgently needed. In recent years, the technology of propane dehydrogenation to propylene has received more and more attention and has achieved great development. [0003] The catalytic dehydrogenation reaction of propane is thermodynamically a reversible reaction with endothermic and molecular number i...

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): B01J23/62C07C5/333C07C11/06
CPCB01J23/62C07C5/3337C07C2523/62C07C11/06Y02P20/52
Inventor 孙承林时宇荣欣李先如
Owner YINGKOU XIANGYANG CATALYST
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