Catalyst for preparation of methanol by carbon dioxide hydrogenation

A carbon dioxide and catalyst technology, applied in the field of catalysts for hydrogenation of carbon dioxide to methanol, can solve the problem of low catalyst activity and the like

Active Publication Date: 2016-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is to solve the problem of low catalyst activity of carbon dioxide hydrogenat

Method used

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  • Catalyst for preparation of methanol by carbon dioxide hydrogenation

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Comparison scheme
Effect test

Embodiment 1

[0035] Catalyst preparation

[0036] Mix 500 grams of palladium nitrate aqueous solution (containing 25 grams of palladium) with 975 grams of 100-120 mesh ZrO 2 The powders were mixed, allowed to stand at room temperature for 12 hours, dried at 110° C. for 12 hours, calcined at 500° C. in an air atmosphere for 4 hours, and cooled naturally to obtain a catalyst precursor. Pressing, crushing and sieving into 40-60 mesh particles under 16MPa, and then reducing at 200° C. for 2 hours in a hydrogen-nitrogen mixed atmosphere with a hydrogen content of 5v% to obtain a catalyst.

[0037] Methanol synthesis

[0038] The synthesis of methanol is carried out in a fixed bed reactor. Methanol synthesis reaction conditions: reaction temperature 270°C, reaction pressure 4MPa, hydrogen:carbon dioxide:nitrogen volume ratio 60:20:20, GHSV=15000mL / (h·g).

[0039] For the convenience of comparison, the catalyst composition, preparation process and methanol synthesis reaction results are listed...

Embodiment 2

[0041] Catalyst preparation

[0042] Mix 500 grams of palladium nitrate aqueous solution (containing 25 grams of palladium) with 975 grams of 100-120 mesh In 2 o 3 The powders were mixed, allowed to stand at room temperature for 12 hours, dried at 110° C. for 12 hours, calcined at 500° C. in an air atmosphere for 4 hours, and cooled naturally to obtain a catalyst precursor. Pressing, crushing and sieving into 40-60 mesh particles under 16MPa, and then reducing at 200° C. for 2 hours in a hydrogen-nitrogen mixed atmosphere with a hydrogen content of 5v% to obtain a catalyst.

[0043] Methanol synthesis

[0044] The synthesis of methanol is carried out in a fixed bed reactor. Methanol synthesis reaction conditions: reaction temperature 270°C, reaction pressure 4MPa, hydrogen:carbon dioxide:nitrogen volume ratio 60:20:20, GHSV=15000mL / (h·g).

[0045] For the convenience of comparison, the catalyst composition, preparation process and methanol synthesis reaction results are list...

Embodiment 3

[0047] Vector preparation

[0048] 100~120 mesh ZrO 2 Powder and 100-120 mesh In 2 o 3 The powder is mixed as a carrier in a mass ratio of 0.5:1.

[0049] Catalyst preparation

[0050] Mix 500 grams of palladium nitrate aqueous solution (containing 25 grams of palladium) with 975 grams of carrier, let stand at room temperature for 12 hours, dry at 110°C for 12 hours, and then roast at 500°C in an air atmosphere for 4 hours, and cool naturally to obtain a catalyst precursor . Pressing, crushing and sieving into 40-60 mesh particles under 16MPa, and then reducing at 200° C. for 2 hours in a hydrogen-nitrogen mixed atmosphere with a hydrogen content of 5v% to obtain a catalyst.

[0051] Methanol synthesis

[0052] The synthesis of methanol is carried out in a fixed bed reactor. Methanol synthesis reaction conditions: reaction temperature 270°C, reaction pressure 4MPa, hydrogen:carbon dioxide:nitrogen volume ratio 60:20:20, GHSV=15000mL / (h·g).

[0053] For the convenience ...

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Abstract

The invention relates to a catalyst for preparation of methanol by carbon dioxide hydrogenation, a preparation method thereof and a methanol synthesis method, and mainly solves the problem of low activity of catalysts for preparation of methanol by carbon dioxide hydrogenation in the prior art. According to a technical scheme, the catalyst for preparation of methanol by carbon dioxide hydrogenation comprises the following components by mass: (1) 85-99 parts of a carrier; and (2) 1-15 parts of at least one active element selected from Pd, Pt or Cu. The catalyst provided by the invention well solves the problem, and can be used in the industrial production of methanol.

Description

technical field [0001] The invention relates to a catalyst for hydrogenation of carbon dioxide to produce methanol, a preparation method of the catalyst and a synthesis method of methanol. Background technique [0002] With atmospheric CO 2 The increase in concentration and its possible adverse effects have aroused widespread concern from governments and researchers in various countries. 2 Research on its effective recycling has become the focus of attention. As one of the basic organic raw materials, methanol is also an important clean fuel. Therefore, the process of recycling carbon dioxide and hydrogenating methanol into methanol has been extensively studied. The research and development of catalysts is the key to realize the industrialization of carbon dioxide hydrogenation to methanol. [0003] Copper-based catalysts are currently the main catalysts for the direct hydrogenation of carbon dioxide, most of which are developed on the basis of synthesis gas-to-methanol c...

Claims

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Application Information

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IPC IPC(8): B01J23/44B01J23/62C07C29/157C07C31/04
CPCY02P20/52
Inventor 刘昌俊严金茂孙楷航范志刚何文军王仰东
Owner CHINA PETROLEUM & CHEM CORP
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