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Hydrogenation catalyst applicable to biodiesel production and preparation method and application thereof

A hydrogenation catalyst, biodiesel technology, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve low selectivity, low isomerization, reaction High temperature problems, to achieve the effect of improving surface acidity, reducing freezing point, and uniform temperature distribution

Active Publication Date: 2017-12-08
WUHAN KAIDI ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst overcomes the defects of low selectivity, low isomerization and high reaction temperature of Fischer-Tropsch synthetic paraffin during hydrocracking

Method used

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  • Hydrogenation catalyst applicable to biodiesel production and preparation method and application thereof
  • Hydrogenation catalyst applicable to biodiesel production and preparation method and application thereof
  • Hydrogenation catalyst applicable to biodiesel production and preparation method and application thereof

Examples

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Effect test

preparation example Construction

[0054] 1. The preparation method of graphite oxide, the specific steps are as follows:

[0055] 101) Weigh 1g of natural graphite, 1g of anhydrous sodium nitrate and 50ml of concentrated sulfuric acid with a mass fraction of ≥75%;

[0056] 102) Slowly put natural graphite and anhydrous sodium nitrate into concentrated sulfuric acid placed in an ice bath, slowly add 6 g of potassium permanganate for oxidation treatment, and stir for 0.5 to 2 hours to obtain a mixed solution;

[0057] 103) Place the mixed solution in a water bath with a temperature of 35° C., stir and react for 2 hours, while slowly adding 200 ml of deionized water to the mixed solution during the stirring process;

[0058] 104) Then place the mixed solution in an oil bath with a temperature of 98°C, continue to stir and react for 0.5h, and then dilute the mixed solution with deionized water to 400ml to obtain a diluted solution;

[0059] 105) Add 30 ml of hydrogen peroxide with a mass fraction of 30% slowly to the dilute...

Embodiment 1

[0073] The preparation method of carrier ①, the specific steps are as follows:

[0074] 1) Weigh 0.7g of molecular sieve graphene composite material, 4.8g of amorphous silica alumina, 2.5g of macroporous alumina and 0.1g of Sesbania powder;

[0075] 2) The macroporous alumina, amorphous silicon aluminum, molecular sieve graphene composite material and sesame powder are dry-mixed in a kneader for 15 minutes to obtain a mixture;

[0076] 3) Weigh 2g of small pore alumina and 6g of 4% nitric acid solution and mix them evenly, as a binder;

[0077] 4) Add 8g of adhesive to the resulting mixture, knead for 30 minutes, transfer to an extruder for extruding, and then freeze-dry it for 20 hours, and then cut into pellets;

[0078] 5) Place the freeze-dried, shaped and cut mixture in an air atmosphere, and then calcinate at a temperature of 500°C for 4 hours and then cool to room temperature to form a carrier ①;

[0079] The preparation method of selective hydrogenation catalyst ①, the specific s...

Embodiment 2

[0083] The preparation method of carrier ②, the specific steps are as follows:

[0084] 1) Weigh 1.0g of molecular sieve graphene composite material, 5.0g of amorphous silica alumina, 2.0g of macroporous alumina and 0.1g of Sesbania powder;

[0085] 2) The macroporous alumina, amorphous silicon aluminum, molecular sieve graphene composite material and sesame powder are dry-mixed in a kneader for 15 minutes to obtain a mixture;

[0086] 3) Weigh 2g of small pore alumina and 6g of 4% nitric acid solution and mix them evenly, as a binder;

[0087] 4) Add 8g of adhesive to the resulting mixture, knead for 30 minutes, transfer to an extruder for extruding, and then freeze-dry it for 20 hours, and then cut into pellets;

[0088] 5) Place the freeze-dried mixture of shaped and cut pellets in an air atmosphere, and then calcinate at a temperature of 500°C for 4 hours and then cool to room temperature to form a carrier ②;

[0089] The preparation method of selective hydrogenation catalyst ②, the ...

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Abstract

The invention discloses a hydrogenation catalyst applicable to biodiesel production and a preparation method and the application thereof. The hydrogenation catalyst comprises a carrier, and an active metal component which is loaded on the carrier, wherein the active metal component accounts for 5-30% by weight of the catalyst product and contains one or the combination of more than one of Co, Mo, Ni and W; the carrier comprises the following raw materials in parts by weight: 1-20 parts of a molecular sieve graphene composite material, 25-65 parts of amorphous silica alumina, 30-65 parts of aluminum oxide, and 0.5-1 part of a sesbania powder. According to the hydrogenation catalyst applicable to biodiesel production, beta molecular sieve and graphene are composited, so that the efficient performances of beta molecular sieve graphene composite material can be realized while the cost is decreased.

Description

Technical field [0001] The invention relates to the field of catalysts, in particular to a hydrogenation catalyst suitable for the production of biodiesel, and a preparation method and application thereof. Background technique [0002] The most notable feature of low-temperature Fischer-Tropsch synthesis reaction is the wide product distribution, low product selectivity, low content of isomerized products, and most of the products are linear hydrocarbons. The above characteristics result in the very low octane number of the Fischer-Tropsch synthetic gasoline fraction and the high freezing points of the kerosene and diesel fractions, which to a certain extent limits the use of Fischer-Tropsch synthetic oil as fuel oil. [0003] Low-temperature Fischer-Tropsch synthetic oil can be produced by means of hydrotreating and hydrocracking to produce high-quality diesel without sulfur, nitrogen, low aromatics, and high cetane number. Diesel produced from low-temperature Fischer-Tropsch syn...

Claims

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Application Information

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IPC IPC(8): B01J29/78B01J23/888B01J23/883B01J35/10B01J37/08B01J37/02C10G47/20
CPCC10G47/20B01J23/002B01J23/883B01J23/8885B01J29/7815B01J37/0018B01J37/0201B01J37/08B01J2523/00C10G2400/04C10G2300/70B01J35/635B01J35/615B01J2523/68B01J2523/845B01J2523/847B01J2523/69
Inventor 王春锋石友良许莉赖波明卫星杨伟光赵焘
Owner WUHAN KAIDI ENG TECH RES INST CO LTD
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