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
3 Cites 12 Cited by

AI-Extracted 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 applic...
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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.

Application Domain

Physical/chemical process catalystsOrganic compound preparation +2

Technology Topic

Molecular sieveIridium +22

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(17)
  • Effect test(1)

Example Embodiment

[0026] Example 1
[0027] Preparation of catalyst precursor: Dissolve 2.0g of hexacarbonyl molybdenum and 4.5g of tetraethylthiuram disulfide in 60ml of acetone at a molar ratio of 1:2, heat to 60°C under argon atmosphere, and reflux for 3 hours to form purple Precipitate, filter by suction, and wash with pentane to obtain purple precipitate. After drying in an oven at 120°C for 12 hours, MoS is obtained 2 Precursor Mo (dedtc) 4.
[0028] Table 1. Thermogravimetric analysis data of catalyst precursor
[0029]
[0030]
[0031] It can be seen from the thermogravimetric results that the actual mass of the precursor P remains 23.4≈23.5 (theoretical mass residue).

Example Embodiment

[0032] Example 2
[0033] MoS 2 /AC catalyst preparation: the catalyst precursor prepared in Example 1 was adjusted to 10wt% MoS 2 /AC conversion, dissolved in N,N-dimethylformamide, completely dissolved and then immersed on the carrier AC, immersion time is 24h, and then dried at 120℃ for 12h; transfer the obtained catalyst to a tube furnace to program the temperature Pyrolysis, the specific reaction process is: loading 0.5-4g catalyst in the constant temperature zone of a 1.8cm inner diameter quartz reaction tube, heating from room temperature 10°C/min to 320°C, and then keeping it for 4h, and the flow rate of argon is 60ml/min. MoS 2 MoS with 10wt% loading 2 /AC catalyst, denoted as MoS 2 /AC-320℃.
[0034] Other conditions remain unchanged, and only by changing the decomposition temperature of the catalyst precursor, catalysts with different crystallinity and different layers can be obtained, which are respectively denoted as MoS 2 /AC-400℃, MoS 2 /AC-600℃, MoS 2 /AC-800℃.

Example Embodiment

[0035] Example 3
[0036] MoS 2 /γ-Al 2 O 3 Preparation of the catalyst: The preparation process is similar to Example 2, except that the carrier is replaced with γ-Al 2 O 3 , Get MoS 2 MoS with 10wt% loading 2 /γ-Al 2 O 3 catalyst.

PUM

no PUM

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

  • Improve stability
  • Easy to prepare
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