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Cobalt-based catalyst used in preparation of methane and coproduction of oil product by using syngas, and preparation and application methods for cobalt-based catalyst
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A synthesis gas conversion and catalyst technology, applied in the field of catalytic chemistry, can solve the problems of large consumption in winter and unbalanced urban gas consumption, and achieve the effect of improving economic benefits
Inactive Publication Date: 2014-11-26
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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In addition, the gas consumption in cities in my country is very unbalanced. The northern region uses a lot of gas in winter and less gas in non-heating seasons. The problem of peak regulation is very serious.
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Embodiment 1
[0034] The preparation mode of embodiment 1 catalyst
[0035] In 10 grams of gamma alumina carrier, according to a certain order, add the aqueous solution of the precursor of cobalt nitrate, manganese nitrate and rhenium successively, the content of active component is the percentage content of total weight of catalyst, is respectively 0.5% of rhenium oxide, cobalt oxide 20%, manganese oxide 5%, dried at 120°C, and calcined at 400 to 1000°C to obtain the desired catalyst. Use pure hydrogen before the reaction, or hydrogen diluted with inert gas, or synthesis gas (H 2 and CO mixture) reduction, and then react.
Embodiment 20
[0036] Example. 20.5%Re5%Mn15%CoO / Al 2 o 3 preparation
[0037] Put AL 2 o 3 The carrier is calcined and purified at a temperature of 550°C. After cooling, an equal volume impregnation is performed. 2.61g of Mn(NO3) 2 ·6H 2 O and 7.4g of Co(NO3) 2 ·6H 2 O was dissolved in 6ml deionized water, and the mixed aqueous solution was impregnated to 7.95g Al 2 o 3 On the support, excess solvent was evaporated in a water bath at 80°C. The obtained sample was dried in an oven at 120°C for 12 hours. After drying, the sample was placed in a muffle furnace, heated to 500°C at a heating rate of 2°C / min, and calcined for 3 hours to obtain a catalyst precursor. Add 0.0896 perrhenic acid to 7ml of aqueous solution, immerse in equal volume, and evaporate excess solvent in a water bath at 80°C. The obtained sample was dried in an oven at 120°C for 12 hours. After drying, the sample was placed in a muffle furnace, and the temperature was raised to 450°C at a rate of 2°C / min, and calci...
Embodiment 3
[0038] The analytical method of embodiment 3 products
[0039] The obtained product was analyzed with Agilent 7890A. The chromatograph is equipped with dual detectors FID and TCD, and has a ten-way valve, which allows the products to enter the packed column and capillary column respectively at the same time. Data were processed with Agilent's Chemstation software.
[0040] The specific chromatographic conditions of Agilent are as follows:
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Abstract
The invention discloses a catalyst for reaction in the process of preparing methane and coproducing an oil product by using syngas, a preparation method for the catalyst and process conditions of methane synthesis and oil coproduction. The composition of the catalyst is ABCoO / C, wherein an active ingredient is cobalt oxide, and metal-based cobalt accounts for 1.0 to 30.0 percent of the total weight of the catalyst; a second active ingredient A is Ru, Re, Rh or other precious metals, and a metal base of the second active ingredient A accounts for 0.01 to 5.0 percent of the total weight of the catalyst; an aid B is oxide, namely TiO2, MnO, Cr2O3, ZrO2, La2O3, CeO2 and the like, and a metal base of the aid B accounts for 0.5 to 15 percent of the total weight of the catalyst; and a carrier C is SiO2, ZrO, Al2O3, TiO2, activated carbon and the like, and the carrier C accounts for 50 to 95 percent of the total weight of the catalyst. The catalyst is prepared by an impregnation method and is obtained by the following steps of: impregnating the carrier C by using nitrates of the component A and the component B and cobalt nitrate, namely nitrate and cobalt nitrate, and roasting at the temperature of between 400 and 800 DEG C. A raw material of the catalyst is the syngas and is wide in source; the catalyst is low in cost and high in efficiency, and is easy to prepare; and the product can be adjusted according to requirements and is suitable for continuous large-scale production.
Description
technical field [0001] The invention belongs to the field of catalytic chemistry, relates to the conversion of synthesis gas into methane and co-production of oil products, and in particular provides a catalyst for synthesizing methane at medium and low temperature and co-production of oil products, the preparation of the catalyst and its application. Background technique [0002] With the implementation of the domestic sustainable development strategy and the strengthening of environmental protection policies, the domestic demand for natural gas has increased significantly. Domestic natural gas production cannot fully meet the market demand, and the contradiction between supply and demand is prominent. Therefore, it is necessary to expand resource supply through multiple channels and methods to meet the growing growing market demand. At the same time, based on the characteristics of my country's oil-scarce, gas-rich and coal-rich energy structure, the development of coal-to...
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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889C07C9/04C07C1/04C10G2/00
Inventor 朱文良刘中民刘勇刘洪超孟霜鹤李利娜刘世平
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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