Catalyst as well as preparation method and application thereof

A technology of catalysts and reactants, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of complex and difficult-to-control preparation processes and low catalytic activity, so as to reduce the cost of use and increase the ratio Surface area, effect of improving pore volume and pore size

Active Publication Date: 2016-07-06
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the catalytic activity of this catalyst is not high, and its preparation process is complicated and difficult to control

Method used

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  • Catalyst as well as preparation method and application thereof
  • Catalyst as well as preparation method and application thereof
  • Catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a catalyst, including carbon nanotubes, and the active component Ce bonded on the carbon nanotubes 4+ x Ti 4+ y (SO 4 2- ) z . As an embodiment of the present invention, the carbon nanotubes are multi-walled carbon nanotubes.

[0043] The preparation method of described catalyst comprises the steps:

[0044] S1, get 2 parts by weight of multi-walled carbon nanotubes, 1 part by weight of TiO 2 , 0.9 parts by weight of Ce(NO 3 ) 3 ·6H 2The concentrated sulfuric acid of 0 and 368 weight parts, obtains mixture;

[0045] S2, heat-treating the mixture at 190° C. for 10 hours to obtain a reactant;

[0046] S3. Filter the reactant to obtain a precipitate, and wash the precipitate with deionized water to prepare the catalyst.

[0047] Preferably, this embodiment also includes the following steps:

[0048] Step S1 also includes the step of ultrasonic dispersion, the ultrasonic frequency is 20 Hz, and the time is 30 min.

[0049] In step S3,...

Embodiment 2

[0052] This embodiment provides a catalyst, including carbon nanotubes, and the active component Ce bonded on the carbon nanotubes 4+ x Ti 4+ y (SO 4 2- ) z . As an embodiment of the present invention, the carbon nanotubes are multi-walled carbon nanotubes.

[0053] The preparation method of described catalyst comprises the steps:

[0054] S1, get 2 parts by weight of multi-walled carbon nanotubes, 1 part by weight of TiO 2 , 1.5 parts by weight of Ce(NO 3 ) 3 ·6H 2 The concentrated sulfuric acid of 0 and 368 weight parts, obtains mixture;

[0055] S2. Heat the mixture at 190°C for 12 hours to obtain a reactant;

[0056] S3. Filter the reactant to obtain a precipitate, and wash the precipitate with deionized water to prepare the catalyst.

[0057] Preferably, this embodiment also includes the following steps:

[0058] Step S1 also includes the step of ultrasonic dispersion, the ultrasonic frequency is 20 Hz, and the time is 30 min.

[0059] In step S3, after the...

Embodiment 3

[0061] This embodiment provides a catalyst, including carbon nanotubes, and the active component Ce bonded on the carbon nanotubes 4+ x Ti 4+ y (SO 4 2- ) z . As an embodiment of the present invention, the carbon nanotubes are multi-walled carbon nanotubes.

[0062] The preparation method of described catalyst comprises the steps:

[0063] S1, get 2 parts by weight of multi-walled carbon nanotubes, 1 part by weight of TiO 2 , 0.6 parts by weight of Ce(NO 3 ) 3 ·6H 2 The concentrated sulfuric acid of 0 and 368 weight parts, obtains mixture;

[0064] S2. Heat the mixture at 190°C for 12 hours to obtain a reactant;

[0065] S3. Filter the reactant to obtain a precipitate, and wash the precipitate with deionized water to prepare the catalyst.

[0066] Preferably, this embodiment also includes the following steps:

[0067] Step S1 also includes the step of ultrasonic dispersion, the ultrasonic frequency is 20 Hz, and the time is 30 min.

[0068] In step S3, after the...

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Abstract

The invention relates to a catalyst as well as a preparation method and an application thereof. The catalyst comprises a carbon nanotube and an active ingredient Ce4+xTi4+y(SO42-)z bonded to the carbon nanotube, wherein x is less than y, and 2x+2y is greater than z; the catalyst has high catalytic activity and stability, and is a biodiesel catalyst with excellent performance. The preparation method of the catalyst comprises the following steps: S1, mixing the carbon nanotube, TiO2, Ce(NO3)3.6H2O and concentrated sulfuric acid to obtain a mixture; S2, heating the mixture at 150-250 DEG C to obtain a reactant; and S3, filtering the reactant to obtain a precipitate, washing the precipitate to prepare the catalyst.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a catalyst and its preparation method and application. Background technique [0002] Biodiesel is a kind of clean renewable energy, which has been paid more and more attention by the society, and many countries are vigorously promoting the application of biodiesel. At present, the raw materials for the synthesis of biodiesel mainly include cheap waste animal and vegetable oils with high fatty acid content, and the catalyst plays an important role in the process of biodiesel synthesis. The solid acid catalyzed process is a reversible process, which can simultaneously catalyze esterification and transesterification reactions. Commonly used solid acid catalysts are insoluble in the reaction system and are easy to separate after the reaction, which can simplify the post-treatment steps. [0003] Chinese patent document CN103551178A discloses a double mesoporous biodiesel catalyst loaded wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/053C10L1/02
CPCB01J27/053C10L1/02C10L2200/0476Y02E50/10
Inventor 舒庆侯小鹏唐国强刘峰生朱丽华许宝泉蔡定建
Owner JIANGXI UNIV OF SCI & TECH
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