Application of a highly active ruthenium molecular sieve catalyst ru/ga-sh5 in catalytic hydrodeoxygenation
A technology of catalytic hydrogenation and molecular sieves, which is applied in the direction of molecular sieve catalysts, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of complex preparation methods, harsh reaction conditions, low selectivity, etc., and achieve good application prospects and preparation Simple, highly selective effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0023] Embodiment 1: Preparation of 5% Ru / Ga-SH5
[0024] According to the molar ratio of synthetic molecular sieve carrier, silicon oxide (SiO 2 ): Aluminum oxide (Al 2 o 3 ): tetrapropylammonium hydroxide (TPAOH): water (H 2 O): gallium nitrate pentahydrate (Ga(NO 3 ) 3 ·5H 2 (0)=1:0.011:0.15:30:0.01. Take a certain amount of tetrapropylammonium hydroxide (TPAOH) in a beaker, add an appropriate amount of deionized water, and add a certain amount of sodium metaaluminate (NaAlO 2 ) powder, stirred for 30min, then added gallium nitrate pentahydrate (Ga(NO 3 ) 3 ·5H 2 O) in aqueous solution, stirred for 10 min. A certain amount of tetraethylorthosilicate (TEOS) was weighed and added dropwise into the above beaker, and the stirring was continued for 2 hours. Then, the mixed solution in the beaker was transferred into a hydrothermal kettle, and crystallized in an oven at 160°C for 72h. After the crystallization was completed, the mixture was separated into layers, the ...
Embodiment 2
[0038] Embodiment 2: the catalytic reaction of diphenyl ether (DPE)
[0039] (1) 100 mg of reaction substrate diphenyl ether, 15 mg of catalyst 5% Ru / Ga-SH5 and 20 mL of n-hexane are put into a 100 mL stainless steel autoclave together, and after sealing, hydrogen gas is introduced to get rid of the residual air in the reactor;
[0040] (2) Continuously feed hydrogen or argon at room temperature to pressurize the reactor to 1 MPa, then raise the temperature to the required reaction temperature (180° C.), and stir for 2 hours at a vigorous stirring speed of 800 rpm;
[0041] (3) After the reaction, the reaction system was naturally cooled to room temperature and the pressure was released, the catalyst was removed by filtration, and the obtained organic phase was analyzed by GC-MS and GC.
[0042] Carriers or catalysts prepared in Comparative Examples 1-4 were respectively carried out to the catalytic reaction of diphenyl ether, the reaction conditions were the same as in Exampl...
Embodiment 3-11
[0048] (1) 100mg reactant, 15mg catalyst 5%Ru / Ga-SH5 and 20mL normal hexane are put into 100mL stainless steel autoclave together, pass into hydrogen to get rid of the residual air in the reactor after sealing;
[0049] (2) Continue to feed hydrogen at room temperature to pressurize the reactor to 1MPa, then stir and react at 180°C for 2-4h, and the stirring speed is 800rpm;
[0050] (3) After the reaction, the reaction system was naturally cooled to room temperature and the pressure was released, the catalyst was removed by filtration, and the organic phase obtained was analyzed by GC-MS and GC. The results are shown in Table 2.
[0051] Table 2 Catalytic reactions of 5%Ru / Ga-SH5 to different reactants
[0052]
[0053]
[0054] Reaction conditions: a 2h, b 4h.
[0055] It can be seen from Table 2 that the catalyst Ru / Ga-SH5 prepared by the present invention can efficiently catalyze the hydrodeoxygenation of various reactants under mild conditions when cyclohexane ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More