Molybdenum-based catalyst for preparing low-carbon alcohol from synthesis gas by taking alkaline carrier material mesoporous NiO-Al2O3 as carrier and preparation method of molybdenum-based catalyst

A molybdenum-based catalyst, mos2-nio-al2o3 technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. problem, to achieve the effect of non-carbonized operation stability and narrow pore size distribution

Active Publication Date: 2021-05-28
INNER MONGOLIA UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although MoS modified by alkali metal compound additives 2 The base catalyst has good performance in synthesizing low-carbon alcohols, but it is far from the requirements of large-scale industrial production. The main problem is that the yield of alcohol is low and the content of methanol in the product is relatively high.

Method used

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  • Molybdenum-based catalyst for preparing low-carbon alcohol from synthesis gas by taking alkaline carrier material mesoporous NiO-Al2O3 as carrier and preparation method of molybdenum-based catalyst
  • Molybdenum-based catalyst for preparing low-carbon alcohol from synthesis gas by taking alkaline carrier material mesoporous NiO-Al2O3 as carrier and preparation method of molybdenum-based catalyst
  • Molybdenum-based catalyst for preparing low-carbon alcohol from synthesis gas by taking alkaline carrier material mesoporous NiO-Al2O3 as carrier and preparation method of molybdenum-based catalyst

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Embodiment 1

[0031] (1) Basic carrier material mesoporous NiO-Al 2 o 3

[0032] Synthesis of Ordered Mesoporous Metal Oxide NiO-Al by Soft Template Method 2 The precursor of O NiAl-LDH (NiAl double metal layered hydroxide): add Ni(NO 3 ) 2 ·6H 2 O, Al(NO 3 ) 3 9H 2 O and template agent P123 / F127 (see Table 1 for the amount of material added), vigorously stirred at room temperature (stirring time 1 hour, rotating speed 250rpm). The final reaction mixture was adjusted to a pH value of 10.0 with sodium hydroxide solution (concentration of 1 mol / L), and the obtained precipitate was filtered, washed and dried (washed several times with distilled water until the pH of the filtrate was 7, and then the washed precipitate was placed in Drying under vacuum at 60°C for 12 hours) to obtain NiAl-LDH;

[0033] Then NiAl-LDH is calcined in a muffle furnace with temperature programming (calcination in a muffle furnace, set to increase 5°C per minute, and the calcination time is 5 hours. The obtai...

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Abstract

The invention discloses a molybdenum-based catalyst for preparing low-carbon alcohol from synthesis gas by taking an alkaline carrier material, namely mesoporous NiO-Al2O3 as a carrier and a preparation method of the molybdenum-based catalyst, belonging to the technical field of catalysts. The catalyst is prepared by the following steps: synthesizing a precursor NiAl-LDH; subjecting the obtained NiAl-LDH is to heating calcination to a obtain a calcined material NiO-Al2O3; preparing MoS2-NiO-Al2O3 by dissolving (NH4)2MoS4 in concentrated ammoniacal liquor, adding NiO-Al2O3, conducting continuous stirring, performing drying in the air, and successively carrying out grinding, firing and cooling to obtain MoS2-NiO-Al2O3; and subjecting MoS2-NiO-Al2O3 and K2CO3 to grinding, mixing and tabletting, and carrying out sieving so as to obtain K-Mo-S / NiO-Al2O3. The catalyst has the advantages of excellent activity for preparing low-carbon alcohol from synthesis gas, high alcohol selectivity and operation stability, low cost and convenience in preparation.

Description

technical field [0001] The present invention belongs to the synthesis gas (CO and H 2 ) to the catalyst technical field of mixing low-carbon alcohols, in particular to a kind of basic carrier material mesoporous NiO-Al 2 o 3 A molybdenum-based catalyst for preparing low-carbon alcohols from synthesis gas as a carrier and a preparation method thereof. Background technique [0002] Low-carbon mixed alcohol is referred to as low-carbon alcohol, which refers to the 1 ~C 5 A liquid mixture of alcohols. Low-carbon alcohols have a high octane number, good miscibility with gasoline, and excellent combustion and chemical processing properties. They can replace methyl tert-butyl ether (MTBE), which is heavily polluted, and become the first choice for clean gasoline additives. Low-carbon alcohol can also be used as a new generation of low-pollution clean fuel to directly replace petroleum. At the same time, ethanol etc. C 2+ Alcohol (a mixture of ethanol, propanol, butanol, pent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J27/232B01J35/02B01J35/10B01J37/02B01J37/08C07C29/156C07C31/02C07C31/04C07C31/08
CPCB01J27/0515B01J27/232B01J37/0201B01J37/088B01J35/023B01J35/10C07C29/156C07C31/04C07C31/08C07C31/02Y02P20/52
Inventor 胡瑞珏屈皓苏海全
Owner INNER MONGOLIA UNIVERSITY
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