Catalyst used for producing olefin through low-carbon alkane dehydrogenation, and preparation method thereof

A technology for low-carbon alkanes and catalysts, applied in the field of catalysts and their preparation, can solve problems such as poor stability and low activity of low-carbon alkanes dehydrogenation catalysts, and achieve the effects of reducing surface acidity, good catalyst performance, and improving anti-sintering performance

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is the problem of low activity and poor stability of low-carbon alkane dehydrogenation catalysts in the prior art, and a new catalyst for low-carbon alkane dehydrogenation to olefins is provided

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 used for producing olefin through low-carbon alkane dehydrogenation, and preparation method thereof
  • Catalyst used for producing olefin through low-carbon alkane dehydrogenation, and preparation method thereof
  • Catalyst used for producing olefin through low-carbon alkane dehydrogenation, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 9.39g of alumina carrier and pour it into 200mL of deionized water and stir for 1 hour, then weigh 0.773g of cerium ammonium nitrate and 0.115g of lanthanum nitrate and dissolve them in 50mL of deionized water respectively, then mix the two evenly, pour alumina and In the mixed solution of water, after continuing to stir for 1 hour, ammonia water was slowly added dropwise under continuous stirring until the pH was 8.5. Aging the product for 2 hours, filtering and washing with 2L of water to obtain a filter cake, drying the filter cake at 90°C for 16 hours, and then roasting it in a muffle furnace at 580°C for 20 hours to obtain Ce 0.8 La 0.2 o 2-δ -Al 2 o 3carrier, here La will make CeO 2 Oxygen vacancies are generated, and δ is the non-stoichiometric value of oxygen (the same below). Weigh 0.190g of stannous chloride and dissolve it in 10mL of hydrochloric acid solution, add it to the above-mentioned carrier under stirring, mix well, soak at 30°C for 12 hour...

Embodiment 2

[0026] Weigh 9.43g of alumina carrier and pour it into 200mL of deionized water and stir for 1 hour, weigh 0.773g of cerium ammonium nitrate and 0.115g of lanthanum nitrate and dissolve them in 50mL of deionized water respectively, then mix the two evenly, pour into alumina and In the mixed solution of water, after continuing to stir for 1 hour, ammonia water was slowly added dropwise under continuous stirring until the pH was 8.5. The product was aged for 2 hours, filtered and washed with 2L of water to obtain a filter cake, dried at 90°C for 16 hours, and then calcined in a muffle furnace at 580°C for 20 hours to obtain Ce 0.8 La 0.2 o 2-δ -Al 2 o 3 carrier. Weigh 0.190g of stannous chloride and dissolve it in 10mL of hydrochloric acid solution, add it to the above-mentioned carrier under stirring, mix well, soak at 30°C for 12 hours, and then dry at 90°C for 16 hours to obtain the catalyst precursor, which is recorded as I. Weigh 0.159g of chloroplatinic acid, 0.259g o...

Embodiment 3

[0028] Weigh 8.94g of alumina carrier and pour it into 200mL of deionized water and stir for 1 hour, weigh 0.773g of cerium ammonium nitrate and 0.115g of lanthanum nitrate and dissolve them in 50mL of deionized water respectively, then mix the two evenly, pour into alumina and In the mixed solution of water, after continuing to stir for 1 hour, ammonia water was slowly added dropwise under continuous stirring until the pH was 8.5. The product was aged for 2 hours, filtered and washed with 2L of water to obtain a filter cake, dried at 90°C for 16 hours, and then calcined in a muffle furnace at 580°C for 20 hours to obtain Ce 0.8 La 0.2 o 2-δ -Al 2 o 3 carrier. Weigh 0.190g of stannous chloride and dissolve it in 10mL of hydrochloric acid solution, add it to the above-mentioned carrier under stirring, mix well, soak at 30°C for 12 hours, and then dry at 90°C for 16 hours to obtain the catalyst precursor, which is recorded as I. Weigh 0.159g of chloroplatinic acid, 0.259g o...

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 relates to a catalyst used for producing olefin through low-carbon alkane dehydrogenation, and a preparation method thereof. The invention mainly aims at solving the problems of low activity and poor stability of dehydrogenation catalysts prepared with prior arts. The low-carbon alkane dehydrogenation catalyst provided by the invention is prepared through an impregnation precipitation method, and comprises the following components, by weight: (a) 0.1-5 parts of Pt or oxide thereof, (b) 0.1-5 parts of Sn or oxide thereof, (c) 0.1-5 parts of alkali metal or oxide thereof, (d) 0.1-5 parts of Fe, Co, Ni, Cu, Zn or oxide thereof, (e) 0.1-10 parts of a Ce-La-O solid solution, and (f) 80-99 parts of a carrier Al2O3. With the above technical scheme, the problems are well solved. The catalyst can be applied in industrial productions for producing low-carbon olefin through low-carbon alkane dehydrogenation.

Description

technical field [0001] The invention relates to a catalyst for dehydrogenating low-carbon alkanes to olefins and a preparation method thereof. Background technique [0002] Propylene and isobutylene are generally used as by-products in refineries and chemical plants. Despite the development and promotion of MGG and catalytic cracking processes that can produce more propylene and isobutene, the amount of by-product propylene and isobutene from refineries and chemical plants still cannot meet market demand, especially MTBE produced by the etherification of isobutylene as a low-pollution And high-octane gasoline additives have become the fastest-growing bulk chemical products in the world, and the demand for isobutylene is increasing day by day. Therefore, the process of producing propylene and isobutene by dehydrogenation of propane and isobutane is favored in areas rich in propane and isobutane resources. The industrialized dehydrogenation processes in the world include the...

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): B01J23/63C07C11/06C07C11/09C07C5/333
CPCY02P20/52
Inventor 姜冬宇缪长喜吴文海吴省刘瑞丹
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap