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

Preparation method for carbon-supported monolayer molybdenum disulfide composite catalyst for low-temperature hydro-conversion of carbonyl sulfide

A single-layer molybdenum disulfide and composite catalyst technology is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., which can solve problems such as high reaction temperature, high energy consumption, and poor desulfurization performance, and achieve The preparation process is simple, the catalytic activity is stable, and the desulfurization precision is high.

Inactive Publication Date: 2016-07-20
DALIAN UNIV OF TECH
View PDF9 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent, publication number: CN101690866A, introduces a method based on Mo-Ni-P-O / γ-Al 2 o 3 Catalyst (Chinese patent CN100435950C preparation method) and activated carbon supported Cu (NO 3 ) 2 or Fe(NO 3 ) 3 Catalyst (Chinese patent CN101352653A preparation method) method (reactor) for removing carbonyl sulfide in yellow phosphorus tail gas, the process reaction temperature is high, it needs to be heated to 300-450 °C, and the energy consumption is high
However, the low-temperature hydrodesulfurization performance is poor, and the desulfurization rate is only 23.7% at 230 °C

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
  • Preparation method for carbon-supported monolayer molybdenum disulfide composite catalyst for low-temperature hydro-conversion of carbonyl sulfide
  • Preparation method for carbon-supported monolayer molybdenum disulfide composite catalyst for low-temperature hydro-conversion of carbonyl sulfide
  • Preparation method for carbon-supported monolayer molybdenum disulfide composite catalyst for low-temperature hydro-conversion of carbonyl sulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 As shown, the present invention "a method for preparing a carbon-supported single-layer molybdenum disulfide composite catalyst for low-temperature hydrogenation conversion of carbonyl sulfide", the specific preparation process is as follows:

[0047] (1) Cetyltrimethylammonium bromide is dispersed in 100mL of deionized water to obtain a 0.01mol / L cetyltrimethylammonium bromide dispersion;

[0048] (2) 200mg of graphene oxide nanobelts were placed into the above-mentioned surfactant solution, and stirred at 40° C. for 12 hours;

[0049] (3) Ammonium tetrathiomolybdate is added in the mixed solution, the mass ratio of ammonium tetrathiomolybdate and graphene oxide nanobelt used is 1:0.83, stir well, add 10mL hydrazine hydrate liquid phase reduction for 6 hours, Suction filtration, washing with water and ethanol, and drying to obtain molybdenum disulfide-residual surfactant-graphene nanoribbon composite material;

[0050] (4) Put the molybdenum disulfid...

specific Embodiment approach

[0053] Compared with the monolayer molybdenum disulfide and graphene nanobelt composite hydrodesulfurization catalyst (SMGR-1) in Example 1, a few-layer molybdenum disulfide and graphene nanobelt composite hydrodesulfurization catalyst, multilayer pure Molybdenum disulfide hydrodesulfurization catalyst and single graphene nanoribbons were used as comparative samples. The specific implementation method: (1) ammonium tetrathiomolybdate is added in the graphene oxide nanobelt, the mass ratio of ammonium tetrathiomolybdate and the graphene oxide nanobelt is 1:0.3, stir evenly, add hydrazine hydrate Liquid phase reduction for 6 hours, suction filtration, washing with water and ethanol, and drying to obtain the molybdenum disulfide-graphene nanoribbon composite material, the molybdenum disulfide-graphene nanoribbon composite material is placed in a tube furnace, protected by nitrogen A high-temperature annealing at 700°C for 2 hours was performed, and after natural cooling down to r...

Embodiment 2

[0058] Such as figure 1 As shown, the present invention "a method for preparing a carbon-supported single-layer molybdenum disulfide composite catalyst for low-temperature hydrogenation conversion of carbonyl sulfide", the specific preparation process is as follows:

[0059] (1) Octadecyltrimethylammonium bromide is dispersed in 100mL deionized water to obtain a 0.1mol / L octadecyltrimethylammonium bromide dispersion;

[0060] (2) 250mg of graphene oxide nanobelts were placed into the above-mentioned surfactant solution, and stirred at 40°C for 24 hours;

[0061] (3) Ammonium tetrathiomolybdate is added in the mixed solution, the mass ratio of ammonium tetrathiomolybdate and graphene oxide nanobelt used is 1:0.36, stir evenly, add 10mL hydrazine hydrate liquid phase reduction for 6 hours, Suction filtration, washing with water and ethanol, and drying to obtain molybdenum disulfide-residual surfactant-graphene nanoribbon composite material;

[0062](4) Place the molybdenum dis...

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 provides a preparation method for carbon-supported monolayer molybdenum disulfide composite catalyst for low-temperature hydro-conversion of carbonyl sulfide, which belongs to the technical field of functional catalytic material preparation and environment-friendly catalytic application. Ammonium tetrathiomolybdate is uniformly dispersed on a surfactant-modified appropriate carbon source, and hydrazine hydrate liquid-phase reduction and high-temperature treatment are then performed, so that the carbon-supported monolayer molybdenum disulfide composite material is obtained. In the material, monolayer molybdenum disulfide uniformly grows on the surface of carbon support, the material shows property rich in defective and active sites, and shows excellent activity in catalytic conversion of carbonyl sulfide by hydrogenation, and the catalytic performance is stable. The preparation method is easy to operate, the cost is low, the temperature of catalysis is low, the accuracy of catalysis is high, the stability is good, and the invention has good economic benefit and industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional catalytic material preparation and environment-friendly catalytic application, and in particular relates to a preparation method of a carbon-loaded single-layer molybdenum disulfide composite catalyst for low-temperature hydrogenation conversion of carbonyl sulfide. Background technique [0002] The distribution of energy resources in my country is characterized by rich coal and poor oil. Coal accounts for more than 70% of the primary energy. The serious environmental pollution caused by the extensive use of coal has aroused increasing public attention. In recent years, people have increasingly realized that the clean and efficient utilization of coal is the only way for my country's healthy development. The synthesis of various fuel oils and fine chemicals based on coal conversion gas as raw material has become an important development direction of coal chemical industry. However, coal-to-gas...

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): B01J27/051
CPCB01J27/051
Inventor 王旭珍杨澜刘洋刘宁邱介山
Owner DALIAN UNIV OF TECH
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