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Catalyst for synthesizing low carbon alcohol, and preparation method thereof

A catalyst and low-carbon alcohol technology, applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve problems such as difficult stability, achieve stable performance, high heat capacity, and maintain high activity effects

Active Publication Date: 2016-03-16
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the Cu-Co system catalyst has high reactivity, C 2 + Alcohol selectivity is good, but stability is still a difficulty restricting its industrialization

Method used

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  • Catalyst for synthesizing low carbon alcohol, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (catalyst preparation)

[0025] Heat 3 L of deionized water to 60 °C, press Cu 1 Fe 0.25 Zn 0.25 Molecular formula, weigh 69g ferric nitrate, 214.2g copper nitrate, 85g zinc nitrate, dissolve in deionized water to form a mixed solution; keep the temperature of the mixed solution at 60°C, stir while heating, add 328.9g citric acid and 15g of polyethylene glycol; add 547.1g of inert alumina powder to the above solution, and then gradually add ammonia water to adjust the pH value of the system to 7, and heat and age at 60°C to obtain a gel after slow evaporation; The glue is dried at 120°C, calcined at 350°C, and crushed to below 100 mesh to obtain an active component coated with inert alumina, wherein the inert alumina accounts for 80% of the weight of the active component; Mix the active component with 4 times the weight of alumina balls, add SiO 2 The silica sol with a mass percentage of 20% was coated, and then dried at 100° C. for 5 hours to obtain a catalyst.

...

Embodiment 2

[0029] (catalyst preparation)

[0030] Heat 3 L of deionized water to 60 °C, press Cu 1 Fe 0.4 Zn 0.25 Molecular formula, weigh 110.5g ferric nitrate, 214.2g copper nitrate, 85g zinc nitrate, dissolve in deionized water to form a mixed solution; keep the temperature of the mixed solution at 60°C, stir while heating, add 362g citric acid and 15g of polyethylene glycol; add 1354.5g of inert alumina powder to the above solution, and then gradually add ammonia water to adjust the pH value of the system to 7, and heat and age at 60°C to obtain a gel after slow evaporation; The glue is dried at 120°C, roasted at 350°C, and crushed to below 100 mesh to obtain an active component coated with inert alumina, wherein the inert alumina accounts for 90% of the weight of the active component; Mix the active component with 4 times the weight of alumina balls, add SiO 2 The silica sol with a mass percentage of 20% was coated, and then dried at 100° C. for 5 hours to obtain a catalyst.

...

Embodiment 3

[0034] (catalyst preparation)

[0035] Heat 3 L of deionized water to 60 °C, press Cu 1 Fe 0.25 Zn 0.5 Molecular formula, weigh 69g ferric nitrate, 214.2g copper nitrate, 169.8g zinc nitrate, dissolve in deionized water to form a mixed solution; keep the temperature of the mixed solution at 60°C, stir while heating, add 381.8g citric acid and 15g of polyethylene glycol; add 1432.6g of inert alumina powder to the above solution, and then gradually add ammonia water to adjust the pH value of the system to 7, and heat and age at 60°C to obtain a gel after slow evaporation; The gel is dried at 120°C, calcined at 350°C, and crushed to below 100 mesh to obtain an active component coated with inert alumina, in which the inert alumina accounts for 90% of the weight of the active component; In the machine, the active component is mixed with 4 times the weight of alumina balls, and SiO is added 2 The silica sol with a mass percentage of 20% was coated, and then dried at 100° C. for ...

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Abstract

The invention provides a catalyst for synthesizing low carbon alcohol, and a preparation method thereof. The catalyst is a double-layer cladding structure, the core is an inert porcelain ball, and the external layer is an active component coated with inert alumina, wherein metal constituent element in the active component is represented by CuaFebZnc, a, b and c in CuaFebZnc respectively are the atomic ratio of Cu, Fe and Zn elements, a is 1, b is 0.1-1, and c is 0.1-1; the coated inert alumina in the active component accounts for 70-95% of the weight of the active component; and the active component accounts for 20-60% of the weight of the catalyst. The preparation method of the catalyst comprises the following steps: coating alumina powder with the dimension of 10-50[mu]m with the metal constituent composed of Cu-Fe-Zn to prepare the active component; and carrying out coating molding on the active component, and coating the inert porcelain ball with the dimension of 3-5mm with the molded active component. Compared with traditional catalysts, the catalyst prepared in the invention has the advantages of high catalysis activity, high C2+ alcohol selectivity, stable performances and long service life.

Description

Technical field: [0001] The invention relates to the field of catalyst synthesis, in particular to a catalyst for synthesizing low-carbon alcohols and a preparation method thereof. Background technique: [0002] Energy is the basis for human survival and civilization evolution. Due to insufficient oil and gas resources, China's dependence on foreign oil has increased year by year. In order to reduce dependence on fossil energy, China has proposed a strategic development plan to vigorously develop new energy and renewable energy to optimize the energy structure. To ensure the country's energy security. [0003] Low-carbon alcohol, that is, low-carbon mixed alcohol, usually refers to C 2 -C 5 alcohol mixture. In addition to being used as a liquid fuel, it can also be used as a gasoline additive to increase the octane number. At the same time, it is also one of the important basic raw materials in the chemical industry. Alcohol is one of the very active research directions ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80C07C29/156C07C31/08C07C31/04
CPCY02P20/52B01J23/002B01J23/80B01J2523/00C07C29/156B01J2523/17B01J2523/842B01J2523/27B01J2523/31C07C31/08C07C31/04
Inventor 曾贤君于海斌孙彦民李晓云张利杰隋云乐张学斌
Owner CHINA NAT OFFSHORE OIL CORP
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