Preparation method of Ru-Ni bimetallic based ordered mesoporous carbon catalyst

A bimetallic, mesoporous carbon technology, applied in the field of composite materials, can solve the problems of complicated steps, uneven distribution of catalyst active components, poor stability, etc., and achieve the effects of economical steps, low cost and simple operation method.

Inactive Publication Date: 2015-03-18
SUZHOU OST ADVANCED MATERIALS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcomings of traditional preparation methods such as tedious steps, uneven distribution of catalyst active components and poor stability, the purpos...

Method used

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  • Preparation method of Ru-Ni bimetallic based ordered mesoporous carbon catalyst
  • Preparation method of Ru-Ni bimetallic based ordered mesoporous carbon catalyst
  • Preparation method of Ru-Ni bimetallic based ordered mesoporous carbon catalyst

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Embodiment 1

[0034] First, chloromethylation was carried out on 8-hydroxyquinoline, 5.84g 8-hydroxyquinoline, 6.4mL HCHO aqueous solution (37wt%) were mixed with 50mL concentrated hydrochloric acid, and 0.6g ZnCl was added 2as a catalyst. Stir at room temperature for 24 hours, filter and wash to obtain 5-chloromethyl-8-hydroxyquinoline hydrochloride. Dissolve 0.9g of CTS in 50ml of 20wt% acetic acid, then add 4.6g of 5-chloromethyl-8-hydroxyquinoline hydrochloride and 60ml of 36wt% triethylamine aqueous solution, reflux at 75°C for 36h, filter and wash to obtain light yellow The sample is denoted as CTS-HQ. Using CTAB as structure directing agent, TEOS as silicon source, CTS-HQ as carbon source, Ni(CH 3 COO) 2 4H 2 O and RuCl 3 Synthesis of mesoscopic complex C for metal precursors 16 SC-Ru x Ni 100-x . The specific method is: weigh 0.5g CTAB and 18.5ml H 2 O stirred to dissolve, add 7.0ml EtOH and 6.85ml NH 3 ·H 2 O (25.0wt%), then add 2.6ml TEOS, add 1.9g CTS-HQ with a total ...

Embodiment 2

[0036] Firstly, chloromethylation was carried out on 8-hydroxyquinoline. Mix 1g of 8-hydroxyquinoline, 1mL HCHO aqueous solution (37wt%) and 10mL concentrated hydrochloric acid, and add 0.1g ZnCl 2 as a catalyst. Stir at room temperature for 72h, filter and wash to obtain 5-chloromethyl-8-hydroxyquinoline hydrochloride. Dissolve 1g of CTS in 10ml of 20wt% acetic acid, then add 1g of 5-chloromethyl-8-hydroxyquinoline hydrochloride and 10ml of 36wt% triethylamine aqueous solution, reflux at 40°C for 72h, filter and wash to obtain a light yellow sample, Denote it as CTS-HQ. Using CTAB as structure directing agent, TEOS as silicon source, CTS-HQ as carbon source, Ni(CH 3 COO) 2 4H 2 O and RuCl 3 Synthesis of mesoscopic complex C for metal precursors 16 SC-Ru x Ni 100-x . The specific method is: weigh 0.04g CTAB and 1.85ml H 2 O stirred to dissolve, add 0.7ml EtOH and 0.85ml NH 3 ·H 2 O (25.0wt%), then add 0.1ml TEOS, add 0.76g CTS-HQ with a total of 0.12mmol RuCl 3 , ...

Embodiment 3

[0038] First, carry out chloromethylation modification to 8-hydroxyquinoline, mix 15g 8-hydroxyquinoline, 15mL HCHO aqueous solution (37wt%) and 200mL concentrated hydrochloric acid, and add 10g ZnCl 2 as a catalyst. Stir at room temperature for 12 h, filter and wash to obtain 5-chloromethyl-8-hydroxyquinoline hydrochloride. Dissolve 15g of CTS in 250ml of 20wt% acetic acid, then add 15g of 5-chloromethyl-8-hydroxyquinoline hydrochloride and 300ml of 36wt% triethylamine aqueous solution, reflux at 100°C for 12h, filter and wash to obtain a light yellow sample, Denote it as CTS-HQ. Using CTAB as structure directing agent, TEOS as silicon source, CTS-HQ as carbon source, Ni(CH 3 COO) 2 4H 2 O and RuCl 3 Synthesis of mesoscopic complex C for metal precursors 16 SC-Ru x Ni 100-x . The specific method is: weigh 6.25g CTAB and 46ml H 2 O stirred to dissolve, add 17.5ml EtOH and 17.1ml NH 3 ·H 2 O (25.0wt%), then add 26ml TEOS, add 38g CTS-HQ with a total of 60.8mmol of R...

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Abstract

The invention discloses a preparation method of a Ru-Ni bimetallic based ordered mesoporous carbon catalyst. The method is as below: reacting a template CTAB, a silicon source TEOS, a carbon source of 8-hydroxy quinoline modified chitosan and metal precursors of nickel salt and ruthenium salt under alkaline condition in an ethanol-water medium at room temperature, and conducting hydro-thermal treatment to obtain a cubic mesoscopic compound with uniformly dispersed metal chitosan complex; and then directly carbonizingat high temperature to remove the template, carbonize the chitosan and reduce Ru and Ni metal ions; and finally removing silica to obtain in situ ordered mesoporous carbon supported Ru-Ni bimetallic nanoparticle catalyst. The method provided by the invention has the advantages of economical steps, low cost, easy operation method and good universality, can simultaneously realize carrier ordering, dispersion of active components and the modulation and control of components, so as to obtain efficient bimetallic catalyst for levulinic acid hydrogenation.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a preparation method of a Ru-Ni bimetallic-based ordered mesoporous carbon catalyst, in particular to an in-situ preparation of ordered mesoporous carbon by multi-component assembly and direct carbonization A method for supported Ru-Ni bimetallic nanocatalysts. Background technique [0002] Bimetallic catalysts are an important class of practical catalysts, which are widely used in the fields of catalysis and electrocatalysis. In bimetallic catalysts, the addition of the second component metal can change the electronic properties of the active site and improve the activity, selectivity and stability of the catalyst. The most common bimetallic catalysts are supported noble metal-based catalysts, which are widely used in hydrogenation, dehydrogenation and reforming reactions. [0003] Mesoporous carbon has high specific surface area, narrow pore size distribution, excel...

Claims

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Application Information

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IPC IPC(8): B01J23/89
Inventor 李福伟杨英夏春谷高广
Owner SUZHOU OST ADVANCED MATERIALS
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