Syngas preparation catalyst and preparation method thereof

A catalyst and synthesis gas technology, which is applied in the field of synthesis gas catalyst and its preparation, can solve the problems such as the combination of metal oxides and carbon fibers that are difficult to achieve, and achieve the effect of improving the anti-carbon deposition ability, simple preparation method, and good dispersion of active metals

Active Publication Date: 2019-06-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] CN106946223A discloses a Ni-based catalyst with SiC-C-N as a carrier. It utilizes the excellent electrical conductivity of SiC to regulate the interaction between metal supports and exhibits certain catalytic performance. However, due to the limitation of SiC materials, although the ratio Surface has improved, but methane to carbon dioxide conversion is only 50-60%
However, this method is difficult to combine metal oxides and carbon fibers, and only has the effect of similar mechanical mixing

Method used

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  • Syngas preparation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Grind 100g of petroleum coke and 6.88g of calcium aluminate to powder respectively, and then mix them with 200g of potassium hydroxide evenly. Put the mixed sample in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumize it, and raise the temperature to 600°C under the condition of a microwave power of 0.2kw, keep it constant for 20min, then pass nitrogen gas to normal pressure, and continue to heat up at a microwave power of 0.2kw Under the condition of 0.2kw, the temperature is raised to 900°C for 10min activation. After the activation was completed, the temperature was lowered to normal temperature, and the resulting sample was taken out.

[0034] Grind the above-mentioned activated sample into powder, weigh it, add it to the acetic acid solution with a concentration of 20wt% according to the mass ratio of 1:20, stir well, mix evenly, and then carry out solid-liquid separation. Wash with ionized water until the pH value of the filtrate is neutr...

Embodiment 2

[0037] Grind 100g of petroleum coke and 8.13g of calcium aluminate to powder respectively, and then mix them with 300g of potassium hydroxide evenly. Put the mixed sample in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumize it, and raise the temperature to 500°C under the condition of a microwave power of 0.3kw, keep it constant for 40min, then pass nitrogen gas to normal pressure, and continue to Under the condition of 0.3kw, the temperature is raised to 800°C for 20min activation. After the activation was completed, the temperature was lowered to normal temperature, and the resulting sample was taken out.

[0038] Grind the above-mentioned activated sample into powder, weigh it, and add it to the acetic acid solution with a concentration of 30wt% according to the mass ratio of 1:15, stir well, mix evenly, and then carry out solid-liquid separation, and the obtained solid is then subjected to dehydration. Wash with ionized water until the pH value ...

Embodiment 3

[0041] Grind 100g of petroleum coke and 8.08g of calcium aluminate to powder respectively, and then mix them with 400g of potassium hydroxide evenly. Put the mixed sample in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumize it, and raise the temperature to 400°C under the condition of a microwave power of 0.4kw, keep it constant for 60min, then pass nitrogen gas to normal pressure, and continue to Under the condition of 0.4kw, the temperature is raised to 700°C for 30min activation. After the activation was completed, the temperature was lowered to normal temperature, and the resulting sample was taken out.

[0042] Grind the above-mentioned activated sample into powder, weigh it, and add it to the acetic acid solution with a concentration of 40wt% according to the mass ratio of 1:20, stir well, mix evenly, and then carry out solid-liquid separation, and the obtained solid is then removed Wash with ionized water until the pH value of the filtrate is...

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Abstract

The invention provides a syngas preparation catalyst and a preparation method thereof, wherein the catalyst comprises an active component and a composite carrier, the active component is selected fromNi and Co, and the carrier is a composite material of an alkaline earth metal aluminate and petroleum coke-based active carbon. The preparation method comprises: uniformly mixing petroleum coke, an alkaline earth metal aluminate and an activator, and activating; washing the obtained sample, and drying; and introducing an active component, drying, and calcining to obtain the catalyst for preparingsyngas through methane carbon dioxide reforming. According to the present invention, the prepared catalyst has advantages of good active metal dispersion, high reaction activity, sintering resistance, less carbon deposition and the like; and the preparation method is simple.

Description

technical field [0001] The invention relates to a catalyst for synthesis gas production and a preparation method thereof, in particular to a preparation method of a catalyst for synthesis gas production by reforming methane and carbon dioxide with carbon materials as the carrier. Background technique [0002] carbon dioxide (CO 2 ) and methane (CH 4 ) as a greenhouse gas is often blamed for the growing problem of "global warming". Converting carbon dioxide and methane into usable chemicals has both energy and environmental implications. In nature, carbon dioxide is usually converted into sugars and other compounds by plants through photosynthesis. Researchers have tried various ways to convert and utilize carbon dioxide artificially. Currently, more mature ways include photocatalysis, high-temperature pyrolysis and chemical reformation. Among them, the reforming reaction of methane and carbon dioxide has always been the focus of research. This reaction can simultaneously ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/78B01J23/755B01J23/75C01B3/40
CPCY02P20/52
Inventor 孙晓丹张舒冬张庆军宋永一刘继华
Owner CHINA PETROLEUM & CHEM CORP
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