Simple high-carbon aldehyde synthesis catalyst

A carbon aldehyde catalyst and catalyst technology, applied in the direction of physical/chemical process catalysts, carbon monoxide reaction preparation, organic chemistry, etc., can solve the problems of not getting rid of the preconditions, and achieve the improvement of disorder and dispersion, selectivity and yield The effect of high efficiency and simple preparation

Active Publication Date: 2020-01-17
NINGXIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The researchers used relatively expensive carbon nanotube materials, which improved the conversion rate to a certain extent, but still did not get rid of the precondition of reduction before catalysis

Method used

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  • Simple high-carbon aldehyde synthesis catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 2.3793 g CoCl 2 ·6H 2 O, dissolved in 20 mL deionized water; weigh 2.3769 gNiCl 2 ·6H 2 O, dissolved in 20mL deionized water; mix the two solutions evenly, add 3.5192 g NaH 2 PO 2 40 mL of the solution, stirred for 0.5 h; under stirring, added 3.0264 g NaBH 4 40 mL of the solution, and continue to react for 1 h; centrifuge the obtained suspension, wash the filter cake until neutral, wash it with absolute ethanol three times, and dry it in vacuum at 50 ºC to obtain the catalyst. The mass content of Co is 18%, the mass content of Ni is 18%, the mass content of P is 38%, and the mass content of B is 26%.

[0024] Evaluation of Catalytic Activity for Synthesis of 1-Nonanal: Reaction Gas Composition of CO50% and H 2 50%, the reaction temperature is 130 ºC, the reaction pressure is 5 MPa, the stirring speed is 1200 r.p.m, and the reaction time is 4 h. The results are shown in Table 1.

Embodiment 2

[0026] Weigh 2.3793 g CoCl 2 ·6H 2 O, dissolved in 20 mL deionized water; weigh 1.1885 g NiCl 2 ·6H 2 O, dissolved in 10mL deionized water; mix the two solutions evenly, add 2.6394 g NaH 2 PO 2 30 mL of the solution, stirred for 0.5 h; under stirring, add 2.2698 g NaBH 4 The solution was 30 mL, and the reaction was continued for 1 h; the obtained suspension was centrifuged, and the filter cake was washed to neutrality, then washed three times with absolute ethanol, and vacuum-dried at 50 ºC to obtain the catalyst. The mass content of Co is 24%, the mass content of Ni is 12%, the mass content of P is 38%, and the mass content of B is 26%. The activity evaluation is the same as in Example 1, and the results are shown in Table 1.

Embodiment 3

[0028] Weigh 2.3793 g CoCl 2 ·6H 2O, dissolved in 20 mL deionized water; weigh 3.56535 gNiCl 2 ·6H 2 O, dissolved in 30mL deionized water; mix the two solutions evenly, add 4.399 g NaH 2 PO 2 50 mL of the solution, stirred for 0.5 h; under stirring, added 3.783 g NaBH 4 The solution was 50 mL, and the reaction was continued for 1 h; the obtained suspension was centrifuged, and the filter cake was washed to neutrality, then washed three times with absolute ethanol, and vacuum-dried at 50 ºC to obtain the catalyst. The mass content of Co is 14%, the mass content of Ni is 22%, the mass content of P is 38%, and the mass content of B is 26%. The activity evaluation is the same as in Example 1, and the results are shown in Table 1.

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Abstract

The invention relates to the field of high-carbon aldehyde synthesis, and provides a high-activity high-carbon aldehyde synthesis catalyst which is capable of realizing conversion of high-carbon alpha-olefin into high-carbon aldehyde, wherein the alpha-olefin conversion rate is close to 100%, and the product aldehyde yield is 96%. The catalyst comprises metal cobalt Co, nickel Ni, non-metal phosphorus P and boron B, and a Ni-Co-P-B amorphous alloy is formed. Compared with a traditional metal catalyst, the advantages are that the catalyst is at a non-equilibrium metastable state in thermodynamics, has unique coordination unsaturation and electron interaction, is adjustable in composition, and shows excellent catalytic performance. According to the scheme, the catalyst has the characteristics of simple preparation process, low cost, high activity and adjustable product proportion.

Description

technical field [0001] The invention belongs to the field of industrial catalysis and relates to a high-carbon aldehyde synthesis catalyst. Background technique [0002] High carbon aldehyde, C 9 -C 13 Aldehyde, as a raw material for fine organic synthesis, can be used to synthesize lubricants, plasticizers, surfactants, fragrances and detergents, etc., and has a very good market value. However, the synthesis of high carbon aldehydes is still limited by the quality of the catalyst. At present, high-carbon aldehydes are industrially produced by hydroformylation of high-carbon α-olefins. Due to excessive consideration of the high boiling point of high-carbon aldehydes, the rhodium catalyst components will be lost and decomposed during the subsequent distillation and separation process. Although the use of homogeneous carbonyl hydrogen cobalt and tertiary phosphine modified carbonyl cobalt catalysts (Petrochemical Industry 2011, 40(12): 1370-1374) can control the loss of cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185C07C45/50C07C47/02
CPCB01J27/1853C07C45/505C07C47/02Y02P20/584
Inventor 赵天生郭靖范素兵高新华张建利马清祥
Owner NINGXIA UNIVERSITY
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