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Catalyst for catalytic conversion of synthetic gas as well as preparation method and application thereof

A catalytic conversion and catalyst technology, which is applied in the direction of catalyst activation/preparation, preparation of organic compounds, metal/metal oxide/metal hydroxide catalysts, etc. It can solve problems such as poor stability, low content of high-carbon alcohols, and poor repeatability of catalysts. question

Active Publication Date: 2019-04-05
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current modified Fischer-Tropsch alcohol catalysts generally have problems such as poor catalyst repeatability, poor stability, and low content of high-carbon alcohols.

Method used

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  • Catalyst for catalytic conversion of synthetic gas as well as preparation method and application thereof
  • Catalyst for catalytic conversion of synthetic gas as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Will Co(NO 3 ) 2 ·6H 2 O, 50% Mn(NO 3 ) 2 Aqueous solution, Fe(NO 3 ) 3 9H 2 O and Zr(NO 3 ) 4 ·5H 2O is dissolved in a certain amount of deionized water according to the molar ratio of Co / Mn / Fe / Zr=5 / 1 / 1 / 0.5 to form a mixed solution with a total metal concentration of 2mol / L, and then sodium carbonate is dissolved in a certain amount of deionized water In ionized water, a lye with a concentration of 2mol / L is formed. Add mother liquor (water) in the beaker, 10gAl 2 o 3 Add the aerosol to the mother liquor and stir evenly (Co and Al 2 o 3 The molar ratio is 4.9:1), the titration temperature is adjusted to 65°C, the titration pH is controlled to be 8, and the above two solutions are co-precipitated in the stirred mother liquor in a co-current manner. After the titration, it was aged at 65°C for 2 hours, centrifuged and washed 6 times, then dried in an oven at 120°C for 12 hours, then transferred to a muffle furnace and heated to 400°C for 4 hours to obtain a...

Embodiment 2

[0095] Will Co(NO 3 ) 2 ·6H 2 O, 50% Mn(NO 3 ) 2 Aqueous solution, Cu(NO 3 ) 3 ·3H 2 O and Zn(NO 3 ) 4 ·5H 2 O is dissolved in a certain amount of deionized water according to the molar ratio of Co / Mn / Cu / Zn=18 / 4 / 1 / 1 to form a mixed solution with a total metal concentration of 1mol / L, and then ammonium carbonate is dissolved in a certain amount of deionized water In ionized water, a lye with a concentration of 1.5mol / L is formed. Add the mother liquor (water) into the beaker, adjust the titration temperature to 35° C., control the titration pH=9, and co-precipitate the above two solutions in the stirred mother liquor in a co-current manner. After the titration, it was aged at 35°C for 12 hours, centrifuged and washed 6 times, then dried in an oven at 100°C for 24 hours, then transferred to a muffle furnace and heated to 300°C for 6 hours to obtain a Co mass content of 56.1%. Co-based catalysts.

[0096] Take 1.02mg of rhodium chloride, dissolve it in 10ml of deioniz...

Embodiment 3

[0100] Take 10g Co(NO 3 ) 2 ·6H 2 O, 10g 50% Mn(NO 3 ) 2 The aqueous solution and 10g of ammonium molybdate were dissolved in a certain amount of deionized water (molar ratio Co / Mn / Mo=3.4 / 2.8 / 5.1); then 10g of activated carbon was taken as a carrier (the molar ratio of Co to activated carbon was 0.2:1), using Equal volume impregnation, drying at room temperature for 24 hours after impregnation, then drying in an oven at 120°C for 12 hours, and finally calcination in a tube furnace at 500°C for 5 hours, the calcination atmosphere is nitrogen, and a Co-based catalyst with a Co mass content of 11.8% is obtained .

[0101] Get 1.482g rhodium nitrate and 0.08g phosphoric acid, dissolve in 10ml of deionized water to form a mixed solution, then take 10gAl 2 o 3 The carrier was added into the mother liquor containing 20ml of deionized water, and the above mixed solution was dropped into the mother liquor drop by drop under the condition of stirring at room temperature. Stirring...

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Abstract

The invention provides a catalyst for the catalytic conversion of a synthetic gas as well as a preparation method and application thereof. The catalyst is prepared from the following components in percentage by weight: 9.8% to 78.5% of Co based catalyst, 0.2% to 16.5% of oxide aid and 5% to 90% of Rh based catalyst. The catalyst provided by the invention is a dual-function catalyst, wherein the Cobased catalyst is mainly used for carrying out the generation of olefin; the carrying out of the process can be obviously promoted due to the existence of the oxide aid; the Rh based catalyst is mainly used for the hydroformylation of the olefin; the olefin generated by the Co based catalyst is enabled to further react with the synthetic gas to prepare mixed alcohol with high value added; the catalyst has excellent catalytic performance; low methane and methanol contents and the high alcohol selectivity are presented in product distribution; and the total selectivity of chemical products (alcohol and olefin) with high value added reaches 90% or above.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a catalyst for catalytic conversion of synthesis gas, its preparation method and application. Background technique [0002] In recent years, with the increasing scarcity of global oil resources, non-oil and gas resources such as coal, natural gas, and biomass will gradually replace oil as the main form of energy supply in the future. The development of energy and chemical conversion and utilization of non-oil and gas resources has become the focus of attention in recent years. my country is a typical developing country with rich coal, little oil and poor gas. Increasing the proportion of coal mines and natural gas in my country's energy structure will be conducive to the healthy and sustainable development of my country's national economy, and is an important strategic measure to ensure my country's energy security. At present, my country's energy and environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/03B01J37/18C07C29/158C07C1/04
CPCC07C1/0435C07C1/044C07C1/0445C07C29/158B01J23/002B01J23/8986B01J23/8993B01J37/031B01J37/18B01J2523/00B01J2523/41B01J2523/48B01J2523/72B01J2523/842B01J2523/845B01J2523/17B01J2523/27B01J2523/3706B01J2523/23B01J2523/31B01J2523/33B01J2523/68
Inventor 钟良枢孙予罕林铁军齐行振
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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