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

Isobutane oxidation dehydrogenation catalyst and preparation method and application method thereof

A technology for oxidative dehydrogenation and isobutane, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of low activity and poor stability

Inactive Publication Date: 2015-11-25
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is the problem of poor stability and low activity of isobutane oxidative dehydrogenation catalysts in the prior art, and a new catalyst for isobutane oxidative dehydrogenation 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
  • Isobutane oxidation dehydrogenation catalyst and preparation method and application method thereof
  • Isobutane oxidation dehydrogenation catalyst and preparation method and application method thereof
  • Isobutane oxidation dehydrogenation catalyst and preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 3 grams of ZSM-5 carrier with a silicon-aluminum ratio of 20, add 5 milliliters of deionized water, add 0.47 grams of Cr(NO 3 ) 3 , 0.03 g KNO 3 and 0.095 g Mg(NO 3 ) 2 , use 3.0w.t.% ammonia water to adjust the pH value of the solution to 4, then soak in a water bath at 70°C for 2 hours, take out the sample for filtration, dry it in an oven at 110°C for 8 hours, and then put the sample in a muffle furnace at 550°C ℃ for 4 hours to obtain the desired catalyst. The mixed gas of n-butane, carbon dioxide and nitrogen is adjusted by the mass flow meter, enters the preheating zone for mixing, and then enters the reaction zone. Both the preheating zone and the reaction zone of the reactor are heated by electric heating wires to reach the predetermined temperature. The inner diameter of the reactor is a quartz tube of Ф10mm-Ф7mm, and the length is about 450mm. After the reaction gas passes through the condenser, it enters the gas chromatograph to analyze its composi...

Embodiment 2

[0030] Weigh 3 grams of ZSM-5 carrier with a silicon-aluminum ratio of 1000, add 5 milliliters of deionized water, add 0.47 grams of Cr(NO 3 ) 3 , 0.03 g KNO 3 and 0.095 g Mg(NO 3 ) 2 , use 3.0w.t.% ammonia water to adjust the pH value of the solution to 2, then soak in a water bath at 70°C for 2 hours, take out the sample for filtration, dry it in an oven at 110°C for 8 hours, and then put the sample in a muffle furnace at 550°C ℃ for 4 hours to obtain the desired catalyst. Evaluation conditions are the same as in Example 1, and the results are shown in Table 1.

Embodiment 3

[0032] Weigh 3 grams of ZSM-5 carrier with a silicon-aluminum ratio of 100, add 5 milliliters of deionized water, add 0.47 grams of Cr(NO 3 ) 3 , 0.03 g KNO 3 and 0.095 g Mg(NO 3 ) 2 , use 3.0w.t.% ammonia water to adjust the pH value of the solution to 4, then soak in a water bath at 80°C for 1 hour, take out the sample for filtration, dry it in an oven at 110°C for 8 hours, and then put the sample into a muffle furnace at 550°C ℃ for 4 hours to obtain the desired catalyst. Evaluation conditions are the same as in Example 1, and the results are shown in Table 1.

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 an isobutane oxidation dehydrogenation catalyst and a preparation method thereof, and mainly solves the problems of low activity and rapid inactivation of catalysts in the prior art in isobutane oxidation dehydrogenation. The isobutane oxidation dehydrogenation catalyst includes the following components by weight: a) 1-20% of Cr element or an oxide thereof; b) 0.1-12% of Li, Na, K, Rb, Cs elements or oxides thereof; c) 0.1-8% of Be, Mg, Ca element or oxides thereof; and d) ZSM-5 zeolite with the silica alumina ratio of 20-1000, and by the technical scheme, the problem is better solved.

Description

technical field [0001] The invention relates to a catalyst for oxidative dehydrogenation of isobutane, a preparation method thereof and use thereof. Background technique [0002] The preparation of corresponding olefins from low-carbon alkanes by catalytic dehydrogenation process has been a focus of attention in the petrochemical industry in recent years, and has become one of the focus and frontiers of the petrochemical industry research field. Isobutene is an important organic chemical raw material, mainly used in the preparation of methyl tert-butyl ether (MTBE), butyl rubber, isoprene rubber and polyisobutylene. In addition, it can also be used to synthesize various organic raw materials and fine chemicals such as methyl methacrylate (MMA), isoprene, 1,4-butanediol, tert-butylamine, tert-butylphenol, ABS resin, etc. In the traditional process, the main source of isobutene is the by-product C4 fraction of naphtha steam cracking ethylene unit, the by-product C4 fraction o...

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): B01J29/48C07C11/09C07C5/42
Inventor 刘瑞丹吴省姜冬宇曾铁强缪长喜
Owner CHINA PETROLEUM & CHEM CORP
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