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

Methane oxidative coupling with la-ce catalysts

A technology of oxidative coupling reaction and catalyst, which is applied in the direction of catalyst activation/preparation, catalyst, heterogeneous catalyst chemical elements, etc., which can solve the problems of affecting and increasing the total cost of preparing catalysts, etc.

Inactive Publication Date: 2018-05-11
SABIC GLOBAL TECH BV
View PDF8 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These catalysts suffer due to the use of biological templates and multi-step methods of preparation which increase the overall cost of preparing the catalyst

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
  • Methane oxidative coupling with la-ce catalysts
  • Methane oxidative coupling with la-ce catalysts
  • Methane oxidative coupling with la-ce catalysts

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0064] (catalyst synthesis)

[0065] All materials used in the synthesis of bulk metal oxide catalysts were obtained from Sigma Aldrich Chemical Company (St. Louis, MO, USA).

[0066] Block metal oxide catalyst. Lanthanum nitrate (La(NO 3 ) 3 ) and cerium nitrate (Ce(NO 3 ) 3 ) was dissolved in deionized water with stirring. The mixture was then dried overnight at 125°C. The dried material was then calcined at 625°C for 5 hours at a ramp rate of 1°C / min. image 3 is to show La(OH) 3 X-ray diffraction (XRD) pattern of the bulk metal oxide catalyst of the present invention (sample 3 in Table 1) for the phase. The inverted triangle indicates that it belongs to La(OH) 3 peak. Such as image 3 Shown, La(OH) 3 phase is the main phase in the catalyst. Figure 4 is the X-ray diffraction (XRD) pattern of sample 5, which does not include La(OH) 3 Mutually.

[0067] Table 1

[0068] Sample serial number

example 2

[0070] (Methane Oxidative Coupling)

[0071] A fixed bed catalyst reactor was filled with the catalytic material of Example 1 (10 mg). The reactor was heated to the desired temperature and methane (CH 4 ) and oxygen (O 2 ) into the reactor. The ignition temperature, methane conversion, oxygen conversion, and C 2+ Product selectivity. Methane conversion was calculated based on the difference in methane inlet and outlet concentrations. Selectivity is based on C 2+ The concentration of the product is calculated compared to all converted methane. From the analytical data it can be concluded that the La(OH) 3 Catalysts in crystalline phase than do not contain La(OH) 3 Catalysts in the crystalline phase have higher C 2+ selective.

[0072] Table 2

[0073]

[0074] Figure 5 is the O of sample 1 (La:Ce ratio 10:1) in the methane oxidative coupling reaction 2 conversion percentage, CH 4 conversion percentage and C 2+ Plot of percent selectivity versus temperature in...

example 3

[0076] (oxidative coupling of methane with a second catalyst)

[0077] The fixed bed catalyst reactor was filled with supported catalyst (100 mg, MnNa 2 WO 4 / SiO 2 ). The reactor was heated to the desired temperature, and methane and oxygen were fed into the reactor at a flow rate of 33.3 sccm. CH for each sample is listed in Table 3 4 :O 2 ratio, methane conversion, oxygen conversion, and C 2+ Product selectivity. Methane conversion was calculated based on the difference in methane inlet and outlet concentrations. Selectivity is based on C 2+ The concentration of the product is calculated compared to all converted methane.

[0078] table 3

[0079]

[0080] From the analysis of the data in Table 3, it was determined that the selectivity of the second catalyst in the presence of oxygen was higher than that obtained with the catalyst used in Example 2.

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

A metal oxide catalyst capable of catalyzing an oxidative coupling of methane reaction is described. The metal oxide catalyst includes a lanthanum (La) cerium (Ce) metal oxide and further including alanthanum hydroxide (La(OH)3) crystalline phase. The catalyst is capable of catalyzing the production of C2+ hydrocarbons from methane and oxygen. Methods and systems of using the metal oxide catalystto produce C2+ hydrocarbons from a reactant gas are also described.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority to US Provisional Patent Application No. 62 / 172,403, filed June 8, 2015, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention generally relates to the ability to convert methane (CH 4 ) and oxygen (O 2 ) to prepare C 2+ Use of lanthanum-cerium bulk metal oxide catalysts for hydrocarbons. In particular, bulk metal oxide catalysts include lanthanum hydroxide (La(OH) 3 ) crystalline phase. Background technique [0004] Due to technological advances, more and more shale gas reservoirs are being produced, which in turn has led to the production of more and more natural gas. Natural gas is a natural mixture of hydrocarbon gases. Natural gas includes methane and contains up to about twenty percent higher hydrocarbons such as ethane and minor impurities such as carbon dioxide and hydrogen sulfide. Although natur...

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): B01J23/10B01J23/16B01J23/34C07C2/08B01J23/04B01J37/00
CPCB01J23/10B01J35/30B01J35/391B01J21/08B01J23/002B01J37/08B01J2523/3706B01J2523/3712C07C2/84C07C2523/10
Inventor W·梁S·萨桑尼D·韦斯特J·洛雷A·马梅多夫I·伦杰尔
Owner SABIC GLOBAL TECH BV
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