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Catalyst for preparing isobutyl alcohol by using synthesis gas and application thereof

A catalyst and a technology for synthesis gas, which are applied in the field of catalysts for preparing isobutanol with high selectivity from synthesis gas and the field of preparation thereof, and can solve the problems of low reaction space velocity, low selectivity of propanol and/or isobutanol, and high reaction space velocity. , to achieve the effect of improving alcohol selectivity, enhancing carbon chain growth ability, and improving performance

Active Publication Date: 2017-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the low selectivity of propanol and / or isobutanol existing in the prior art, the problem of low reaction space velocity, a kind of new catalyst that is used for synthesis gas to produce isobutanol is provided, and this catalyst is used It has the advantages of high selectivity of propanol and / or isobutanol and high reaction space velocity in the reaction of synthesis gas to isobutanol

Method used

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  • Catalyst for preparing isobutyl alcohol by using synthesis gas and application thereof
  • Catalyst for preparing isobutyl alcohol by using synthesis gas and application thereof
  • Catalyst for preparing isobutyl alcohol by using synthesis gas and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Zn 0.75 Na 0.06 Cr 0.25 o x Catalyst is prepared as follows:

[0030] Weigh 0.75mol of zinc nitrate and 0.25mol of chromium nitrate, dissolve them in 1000mL of distilled water, then dissolve 3mol of NaOH in 1000mL of water, co-precipitate the two aqueous solutions, age at 80°C for 3h, and filter at 100 It was dried overnight at ℃ and calcined at 400℃ for 12h. After the calcination is completed, the catalyst intermediate supports 0.03mol of Na 2 CO 3 , dried overnight at 80°C and calcined at 400°C for 2h to obtain Zn 0.75 Na 0.06 Cr 0.25 o x catalyst.

[0031] 1 g of prepared Zn 0.75 Na 0.06 Cr 0.25 o x The catalyst was loaded into a quartz reaction tube with a diameter of 5 mm, and the synthesis gas (n 氢气 :n 一氧化碳 =50:50) into the reaction tube, into the catalytic bed reaction, the reaction temperature is 400 ° C, the reaction system pressure is 10MPa, the gas volume space velocity is 10,000h -1 Syngas to isobutanol reaction under conditions. The reacti...

Embodiment 2

[0033] Zn 0.3 Na 0.01 Cr 0.6 La 0.3 o x Catalyst is prepared as follows:

[0034]Weigh 0.3 mol of zinc nitrate, 0.6 mol of chromium nitrate, 0.3 mol of lanthanum nitrate, and 0.001 mol of magnesium nitrate, and dissolve them in 1000 mL of distilled water. Then dissolve 3mol NaOH in 1000mL water, co-precipitate the two aqueous solutions, age at 80°C for 3h, filter and dry at 100°C overnight, and roast at 400°C for 12h. After the calcination is completed, the catalyst intermediate supports 0.005mol of Na 2 CO 3 , dried overnight at 80°C and calcined at 400°C for 2h to obtain Zn 0.3 Na 0.01 Cr 0.6 La 0.3 o x catalyst.

[0035] 1 g of prepared Zn 0.3 Na 0.01 Cr 0.6 La 0.3 o x The catalyst was loaded into a quartz reaction tube with a diameter of 5 mm, and the synthesis gas (n 氢气 :n 一氧化碳 =50:50) into the reaction tube, into the catalytic bed reaction, the reaction temperature is 400 ° C, the reaction system pressure is 10MPa, the gas volume space velocity is 10,0...

Embodiment 3

[0037] Zn 0.6 K 0.03 Cr 0.5 Ce 0.1 o x Catalyst is prepared as follows:

[0038] Weigh 0.6mol of zinc nitrate, 0.5mol of chromium nitrate, 0.1mol of cerium nitrate, dissolve in 1000mL of distilled water, then dissolve 3mol of NaOH in 1000mL of water, co-precipitate the two aqueous solutions, and age at 80°C 3h, dried at 100°C overnight after filtration, and calcined at 400°C for 12h. After the calcination is completed, the catalyst intermediate supports 0.015mol of K 2 CO 3 , dried overnight at 80°C and calcined at 400°C for 2h to obtain Zn 0.6 K 0.03 Cr 0.5 Ce 0.1 o x catalyst.

[0039] 1 g of prepared Zn 0.6 K 0.03 Cr 0.5 Ce 0.1 o x The catalyst was loaded into a quartz reaction tube with a diameter of 5 mm, and the synthesis gas (n 氢气 :n 一氧化碳 =50:50) into the reaction tube, into the catalytic bed reaction, the reaction temperature is 400 ° C, the reaction system pressure is 10MPa, the gas volume space velocity is 10,000h -1 Syngas to isobutanol reaction ...

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Abstract

The invention belongs to the technical field of chemistry and chemical engineering and particularly provides a catalyst for preparing isobutyl alcohol by using synthesis gas and application thereof. The problem that an existing catalyst for preparing isobutyl alcohol by using synthesis gas and the isobutyl alcohol are not high in selectivity is mainly solved. A general molecular formula of the catalyst is ZnaBbCcDdOx, wherein B is selected from at least one of IA families such as a periodic table of elements, C is selected from at least one of VIB families such as a periodic table of elements, D is selected from at least one of lanthanide series metals, the value range of a is 0.2-0.8, the value range of b is 0.005-0.2, the value range of c is 0.1-0.7, the value range of d is 0-0.3, and x represents the number of atoms required by element valences. The problem can be well solved by adopting the catalyst, the isobutyl alcohol product is efficiently, continuously and stably prepared, and the catalyst can be used for industrial production of the isobutyl alcohol through synthesis gas.

Description

technical field [0001] The invention belongs to the technical field of chemistry and chemical engineering, and in particular relates to a catalyst for producing isobutanol from syngas and a preparation method thereof, in particular to a catalyst for producing isobutanol with high selectivity from synthesis gas and a preparation method thereof. Background technique [0002] Isobutanol is a basic organic chemical raw material, which can be used to manufacture antioxidants, isobutyl acetate (paint solvent), isobutyl isobutyrate (food flavor), isobutyl lactate, isobutyronitrile (fine chemical intermediate), diisobutyl phthalate plasticizer and synthetic rubber, etc. At the same time, isobutanol can also be widely used as a solvent for the purification of salts such as strontium, barium and lithium. In 2010, isobutanol was included in the fuel additive catalog of the US Environmental Protection Agency, further expanding the application prospects of isobutanol. [0003] At prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/26B01J23/34B01J23/28C07C31/12C07C29/153
Inventor 周海波刘苏王仰东宋庆英张磊
Owner CHINA PETROLEUM & CHEM CORP
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