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Method for hydrocarbon preparation through high-grade fatty acid ester hydrogenation

A fatty acid ester, advanced technology, applied in the field of deoxygenation of advanced fatty acid esters to hydrocarbons, can solve the problems of low C-C bond hydrogenolysis cracking activity, low performance of hydrodecarbonylation/hydrodecarboxylation, etc., and achieve the goal of improving decarboxylation selectivity Effect

Active Publication Date: 2016-07-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Studies have shown that the role of phosphorus in phosphides results in significantly lower hydrodecarbonylation / hydrodecarboxylation performance than the corresponding metals
For example, the hydrodecarbonylation activity of nickel phosphide catalyst is significantly lower than that of metallic nickel, but the activity of CO methanation and C-C bond hydrogenolysis cracking of nickel phosphide catalyst is extremely low (Applied Catalysis B: Environmental, 2014, 144: 870-884)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] CeO 2 The carrier is prepared by the template method, specifically: prepare a 0.1mol / L cetyltrimethylammonium bromide (CTAB) solution, and prepare a certain amount of 0.1mol / L according to n(CTAB) / n(Ce)=0.8 Ce(NO 3 ) 3 ·6H 2 O solution. The CTAB solution was quickly added to the Ce(NO 3 ) 3 ·6H 2 O solution, and stirred rapidly for 20min. At a slightly slower stirring speed, 25% ammonia solution was slowly added dropwise to the above mixed solution until the pH=11, and the stirring was continued for 2 h. The resulting light yellow mixture was placed in a round-bottomed flask, kept in a water bath at 90°C for 4 days, after the mixture was cooled to room temperature, it was suction-filtered, washed alternately with absolute ethanol and distilled water until no Cl was detected in the filtrate. - and NO 3 - ion so far. The cleaned samples were dried in air atmosphere at 120°C for 12h. Then calcined at 500°C for 3h in flowing air to obtain a cerium oxide carrier....

Embodiment 2

[0036] Catalyst preparation process is the same as embodiment 1, and difference is to weigh 2.753 grams of Ni (NO 3 ) 2 ·6H 2 O and 1.089 g NH 4 h 2 PO 4 Made into an aqueous solution, the prepared catalyst is CeO 2 load Ni 2 P Catalyst C-2. Catalyst C-2 was passivated in the same manner as in Example 1 and set aside. The nickel content in catalyst C-2 was 9.6% by weight.

Embodiment 3

[0038] Catalyst preparation process is the same as embodiment 1, difference is weighing 2.753 gram Co(NO 3 ) 2 ·6H 2 O and 1.634 g NH 4 h 2 PO 4 Made into an aqueous solution, the prepared catalyst is CeO 2 Supported CoP catalyst C-3. Catalyst C-3 was passivated in the same manner as in Example 1 and set aside. The cobalt content in catalyst C-3 was 9.7% by weight.

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PUM

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Abstract

The invention discloses a method for hydrocarbon preparation through high-grade fatty acid ester hydrogenation. In the presence of hydrogen, a high-grade fatty acid ester-containing raw material contacts with a catalyst and undergoes a reaction. The method is characterized in that the catalyst contains a phosphide of VIII group metal or VIII group-VIB metal and the raw material contains 50-10000wtppm by sulfur weight of a sulfur-containing compound. Compared with the prior art, the method has better hydrogenation decarbonylation and hydrogenation decarboxylation selectivity.

Description

technical field [0001] The invention relates to a method for producing hydrocarbons through deoxygenation of higher fatty acid esters. Background technique [0002] With the increasing shortage of fossil resources such as oil, natural gas and coal and the increasingly serious environmental pollution, many countries have carried out the development and utilization of renewable resources. Biomass is the only renewable energy source that can be converted into carbon-containing liquid fuels. Among them, the preparation of alkanes similar to petroleum-based diesel components by deoxygenation of vegetable oils has attracted the attention of domestic and foreign industrial and academic circles. [0003] Vegetable oil deoxygenation can be carried out by two ways: hydrodeoxygenation and hydrodecarbonylation / hydrodecarboxylation. Among them, hydrocarbons with the same carbon number as the corresponding fatty acid can be obtained through hydrodeoxygenation, and hydrocarbons with one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00B01J27/185
CPCY02P30/20
Inventor 陈吉祥郑征李明丰褚阳夏国富
Owner CHINA PETROLEUM & CHEM CORP
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