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

Synthesis of molybdenum sulphide with controllable layer number and application of molybdenum sulphide with controllable layer number in aromatic phenol and ether reactions

A technology of molybdenum sulfide and aromatic phenol, applied in the field of catalytic conversion of biomass derivatives, can solve the problems of high cost and low yield, and achieve the effects of high conversion rate and yield, simple and easy preparation method and high stability

Active Publication Date: 2016-12-14
TIANJIN UNIV +1
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in the prior art, the present invention provides a synthesis of molybdenum sulfide with a controllable layer number and its application method in the reaction of aromatic phenols and ethers, so as to solve the problem of the production rate of noble metal catalyst products in the prior art low cost problem

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
  • Synthesis of molybdenum sulphide with controllable layer number and application of molybdenum sulphide with controllable layer number in aromatic phenol and ether reactions
  • Synthesis of molybdenum sulphide with controllable layer number and application of molybdenum sulphide with controllable layer number in aromatic phenol and ether reactions
  • Synthesis of molybdenum sulphide with controllable layer number and application of molybdenum sulphide with controllable layer number in aromatic phenol and ether reactions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of catalyst precursor: Dissolve 2.0g molybdenum hexacarbonyl and 4.5g tetraethylthiuram disulfide in a molar ratio of 1:2 in 60ml of acetone, heat to 60°C under an argon atmosphere, and reflux for 3 hours to form a purple color Precipitation, filtered by suction, washed with pentane to obtain a purple precipitate, and dried in an oven at 120°C for 12 hours to obtain MoS 2 Precursor Mo(dedtc) 4 .

[0028] Table 1. Catalyst precursor thermogravimetric analysis data

[0029]

[0030]

[0031] From the thermogravimetric results, it can be seen that the actual precursor P has a residual mass of 23.4 ≈ 23.5 (theoretical mass residual).

Embodiment 2

[0033] MoS 2 Preparation of / AC catalyst: the catalyst precursor prepared in Example 1 was mixed with 10wt% MoS 2 / AC conversion Dissolved in N,N-dimethylformamide, completely dissolved and impregnated on the carrier AC for 24 hours, and then dried at 120°C for 12 hours; the obtained catalyst was transferred to a tube furnace for temperature programming Pyrolysis, the specific reaction process is: load 0.5-4g of catalyst in the constant temperature zone of a quartz reaction tube with an inner diameter of 1.8cm, raise the temperature from room temperature 10°C / min to 320°C, and then keep it for 4h, and the flow rate of argon gas is 60ml / min. MoS 2 MoS with a loading of 10 wt% 2 / AC catalyst, denoted as MoS 2 / AC-320°C.

[0034] Other conditions remain the same, and only changing the decomposition temperature of the catalyst precursor can obtain catalysts with different crystallinity and different layers, which are respectively denoted as MoS 2 / AC-400℃, MoS2 / AC-600℃, MoS ...

Embodiment 3

[0036] MoS 2 / γ-Al 2 o 3 Preparation of the catalyst: the preparation process is similar to Example 2, the difference is that the support is replaced by γ-Al 2 o 3 , get MoS 2 MoS with a loading of 10wt% 2 / γ-Al 2 o 3 catalyst.

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 synthesis of a molybdenum sulphide catalyst with a controllable layer number, and application of the molybdenum sulphide catalyst with the controllable layer number in aromatic phenol and ether reactions. The catalyst takes molybdenum sulphide as a main active component; one or more of the metals, namely, nickel, cobalt, iron, ruthenium, rhodium, palladium, osmium, iridium, platinum and copper, can be added to serve as a second component; the catalyst can be loaded on one or a composite carrier of a carbon material (including AC, VB, CF, Graphene, CT, a mesoporous carbon material and the like), a molecular sieve (including a sliicon-alumininm molecular sieve and a phosphorous-aluminium molecular sieve), an oxide (including gamma-Al2O3, ZrO2, TiO2 and the like), and is used for catalytic hydrogenation reactions of aromatic phenols and ether compounds. The catalyst can catalyze the conversion of the aromatic phenols and the ether compounds into high value-added fine chemicals efficiently under the conditions that the temperature is 150 to 350 DEG C and the initial hydrogen pressure to 2 to 6 MPa. The preparation method for preparing the molybdenum sulphide catalyst is simple and feasible; layer number controllable synthesis of the molybdenum sulphide can be realized; moreover, both a precursor and the catalyst are stable in air; the catalyst has very high stability.

Description

technical field [0001] The invention belongs to the technical field of catalytic conversion of biomass derivatives, in particular to the synthesis of a molybdenum sulfide catalyst with a controllable layer number and its hydrogenation reaction in lignin single / dimerization model compounds such as aromatic phenol and ether small molecule compounds A method for preparing high value-added fine chemicals with an aromatic structure. Background technique [0002] As we all know, since the three technological revolutions, energy has become the lifeblood of the national economy. And the energy on earth is limited. Fossil fuels, represented by oil, are a major source of energy, accounting for three-quarters of the world's energy supply [1] . Fossil fuels are non-renewable energy sources. With their increasing consumption, rising prices, and the improvement of environmental protection regulations, energy shortages, energy conservation and emission reduction have become important fa...

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): B01J27/051B01J35/02C07C41/20C07C43/23C07C37/52C07C39/04C07C1/20C07C15/04C07C15/06
CPCC07C1/20C07C15/06C07C37/52C07C41/20B01J27/051B01J35/00B01J35/30C07C43/23C07C39/04C07C15/04Y02P20/52
Inventor 纪娜刁新勇张涛郑明远梁长海刘庆岭
Owner TIANJIN UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More