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Catalyst for preparing alkane of diesel oil fraction from synthetic gas and its preparation

A catalyst and synthesis gas technology, applied in the direction of hydrocarbon production from carbon oxides, petroleum industry, recovery of liquid hydrocarbon mixtures, etc., can solve problems such as complex processes, difficult competition for oil resources, and high costs

Inactive Publication Date: 2005-02-23
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the process of converting coal / natural gas into liquid fuel through synthesis gas by using two-stage or multi-stage method is complex and costly. As a result, it is difficult to compete with oil resources, which limits the production of gasoline or diesel from coal / natural gas through FTS to a certain extent. Realization of craft
However, it has not been seen so far that it is used to select synthetic C from syngas as raw material. 20 Catalysts within and mainly diesel fraction paraffins

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Take by weighing 20 grams of apricot kernel activated carbon (specific surface area 1182m 2 / g, pore volume 0.45cm 3 / g, flat diameter pore diameter 26.5 Å, place of production, Beijing Guanghua Timber Factory) after washing, dry at 180°C for 12 hours before use. Co(NO 3 ) 2 .6H 2 30 milliliters of O aqueous solution, with this aqueous solution impregnated above-mentioned apricot kernel active carbon under negative pressure, natural drying, 120 ℃ of oven dryings obtained cobalt-containing catalyst 1 for 8 hours.

example 2

[0019] Take by weighing 15 grams of coconut shell activated carbon (specific surface area 939m 2 / g, pore volume 0.35cm 3 / g, flat diameter aperture 26.6 , place of origin, Beijing Guanghua Timber Factory), weighed 1.67 grams of Zr (NO 3 ) 4 ·5H 2 O, be dissolved in 24 milliliters of water, impregnate the weighed apricot kernel gac with this aqueous solution. Dry at 110°C. Weigh 13.39 g Co(NO 3 ) 2 .6H 2 O was dissolved in 17 milliliters of water, and this aqueous solution was impregnated with the above-mentioned apricot kernel activated carbon under negative pressure, dried naturally, and dried in an oven at 120° C. for 8 hours to obtain catalyst 2 containing 15% cobalt and 2% Zr.

example 3

[0021] Take by weighing the apricot kernel activated carbon of 15 grams of embodiment 1. Weigh 1.12 g of Ce(NO 3 ) 3 ·6H 2 O, be dissolved in 25 milliliters of water, impregnate the weighed apricot kernel gac with this aqueous solution. Dry at 110°C. Weigh 13.40 g Co(NO 3 ) 2 .6H 2 O was dissolved in 17 milliliters of water, and the aqueous solution was impregnated with the above-mentioned apricot kernel activated carbon under negative pressure, dried naturally, and dried in an oven at 120° C. for 8 hours to obtain catalyst 3 containing 15% cobalt and 2% Ce.

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Abstract

The catalyst consists of three parts including active component, assistant and carrier. The main active component is metal Co. The first assistant element is group IVB metal element, such as Ti and Zr or group IIIB metal element, such as La and Ce; and the second ssistant element is group VIII metal element, such as Rh, Ru and Pt. The carrier is active carbon of apricot kernel, coconut shell, oil palm or coal; has specific surface area of 200-2000 sq mg, pore volume of 0.5-2.0 cu cm / g and pore distribution of 4-1000 angstrom. Of the catalyst weight, metal Co accounts for 4-50 %, the first assistant element 0.01-20.0% and the second assistant element 0.01-50 %. The catalyst may be used in the Fischer-Tropsch reaction of synthetic gas to prepare high-quality diesel oil as clean liquid fuel.

Description

field of invention [0001] The invention provides a catalyst for selectively preparing linear alkanes with carbon number within 20 from synthesis gas as raw material, and the carbon number of hydrocarbons is mainly concentrated in the diesel oil fraction section. Background technique [0002] Fischer-Tropsch Synthesis (FTS) is the core process of converting coal / natural gas into clean fuels (such as gasoline, diesel, alcohols, etc.) through synthesis gas. In recent years, the proven reserves of coal / natural gas have been continuously increasing, and oil resources have been depleted day by day, making the research in this field very active. However, the core of its efficient conversion is still the catalytic problem related to the research of Fischer-Tropsch synthesis catalysts. In the nearly 80 years of research on FTS catalysts, it has been found that Fe, Co and Ru are effective active components of FTS catalysts, and auxiliary elements such as Ru, Zr, K and Cu play an impo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75C07C1/04C10G5/00
Inventor 丁云杰马文平林励吾
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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