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Organic hydrophobic modified cobalt-based fischer-tropsch synthesis catalyst, preparation thereof and application thereof

A hydrophobic modification and catalyst technology, which is applied in the direction of molecular sieve catalysts, preparation of liquid hydrocarbon mixtures, physical/chemical process catalysts, etc., can solve problems such as complex preparation processes, and achieve simple preparation methods, good selectivity, and low selectivity Effect

Active Publication Date: 2010-08-25
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using mesoporous zirconium molecular sieve as carrier, although it does not form compounds with cobalt, its preparation process is relatively complicated

Method used

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  • Organic hydrophobic modified cobalt-based fischer-tropsch synthesis catalyst, preparation thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Catalyst preparation: Weigh 10.0 g of vacuum-dried mesoporous titanium dioxide (average pore size is 23.0 nm) and evenly spread it on a piece of filter paper, then place the filter paper on a self-made small shelf and move it into the container, then add 24mmol of hexamethyldisilazane, the container was sealed and moved into an oven, and the temperature was raised to 50°C for a constant temperature reaction. After 24h of reaction, the sample was taken out, and vacuum-dried at 60°C for 24h to obtain a hydrophobic modified carrier. Then weigh 13.7g Co(NO 3 ) 2 ·6H 2 O was dissolved in 45ml of propanol solution, impregnated with 10.0g of the above-mentioned hydrophobically modified carrier, left to stand for 12h, and then dried in an oven at 90°C for 24h, after the dried solid was fully ground, roasted in a muffle furnace at 350°C for 8h to obtain Cobalt samples are loaded. Then weigh 10.0g of the above-mentioned loaded cobalt sample and carry out a secondary modificati...

Embodiment 2

[0031] Catalyst preparation: Weigh 10.0g of vacuum-dried SBA-15 molecular sieve carrier (average pore size is 6.0nm) and evenly spread it on a piece of filter paper, then place the filter paper on a self-made small shelf and move it into the container, then put it in the container Add 20 mmol of vinyltriethoxysilane, seal the container and move it into an oven, raise the temperature to 80°C for a constant temperature reaction, take out the sample after 48 hours of reaction, and vacuum dry at 55°C for 48 hours to obtain a hydrophobic modified carrier. Then weigh 5.7g Co(NO 3 ) 2 ·6H 2 O was dissolved in 50ml of methanol solution, impregnated with 10.0g of the above-mentioned hydrophobically modified carrier, stood still for 24h, and then dried in an oven at 120°C for 12h, after the dried solid was fully ground, baked in a muffle furnace at 400°C for 6h to obtain the support Cobalt samples. Then weigh 10.0g of the above-mentioned loaded cobalt sample and carry out a secondary...

Embodiment 3

[0034] Catalyst preparation: Weigh 10.0g vacuum-dried commercial carbon nanotubes (average pore size is 15.0nm) and spread evenly on a piece of filter paper, then place the filter paper on a self-made small shelf and move it into the container, and then put it in the container Add 15 mmol of trimethylchlorosilane, seal the container and move it into an oven, raise the temperature to 80°C for a constant temperature reaction, take out the sample after 48 hours of reaction, and vacuum dry at 50°C for 36 hours to obtain a hydrophobic modified carrier. Then weigh 25.3g Co(NO 3 ) 2 ·6H 2 O was dissolved in 40ml of propanol solution, impregnated with 10.0g of the above-mentioned hydrophobically modified carrier, left to stand for 24h, then dried in an oven at 100°C for 12h, after the dried solid was fully ground, roasted in a muffle furnace at 500°C for 8h to obtain Cobalt samples are loaded. Then weigh 10.0g of the above-mentioned loaded cobalt sample and carry out a secondary mo...

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Abstract

The invention provides an organic hydrophobic modified cobalt-based fischer-tropsch synthesis catalyst. The catalyst consists of the following components in percentage by weight: 5.0 to 30.0 percent of cobalt serving as an active component, 50 to 80 percent of carrier, 5 to 20 percent of silicon dioxide and 5 to 40 percent of hydrophobic groups. The catalyst has the advantages of simple preparation process and high selectivity of middle distillate oil.

Description

technical field [0001] The invention belongs to a catalyst and its preparation and application, in particular to an organic hydrophobic modified cobalt-based Fischer-Tropsch synthesis catalyst and its preparation and application. technical background [0002] With the soaring price of oil, the security of energy supply and the enhancement of people's awareness of environmental protection, the world urgently needs to introduce an environmentally friendly green energy to replace the original inefficient and heavily polluting energy consumption system. As one of the candidates, Fischer-Tropsch synthesis Technology is the process of converting coal, oil, natural gas or biomass into hydrocarbons through synthesis gas under the action of catalysts. Compared with extracting gasoline and diesel oil from crude oil, many clean fuels and chemicals such as gasoline, diesel oil, wax, naphtha, and low-carbon olefins can be obtained through this process, so this process is considered to be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J29/03C10G2/00
Inventor 孙予罕贾利宏李德保王俊刚侯博
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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