A method for hydrogen production by phenol adsorption enhanced reforming

A technology for reforming hydrogen and phenol, which is applied in the energy field to achieve the effects of improved purity, good stability and high activity

Active Publication Date: 2021-12-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the use of substances with high carbon content in coke, such as phenol, for hydrogen production by adsorption-enhanced reforming.

Method used

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  • A method for hydrogen production by phenol adsorption enhanced reforming
  • A method for hydrogen production by phenol adsorption enhanced reforming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0027] Weigh 0.0043mol of nickel nitrate, 0.064mol of the calcium salt in Table 1 and 0.023mol of the aluminum salt in Table 1, dissolve them in 50ml of water, dry at 120°C, and roast the obtained product in a muffle furnace at 800°C for 4h to obtain Ni -Ca-Al-O catalyst, Ni-Ca-Al-O catalyst packed in a fixed bed, argon as carrier gas, 1.296h -1 A phenol aqueous solution with a concentration of 0.0797 g / ml was introduced at a weight hourly space velocity of 0.0797 g / ml, and the reaction temperature was 550° C., and the purity of hydrogen in the product after 15 minutes of reaction was shown in Table 1 below. The X-ray diffraction figure, TEM figure of embodiment 1 gained Ni-Ca-Al-O catalyst are as follows figure 1 , figure 2 shown.

[0028] Table 1

[0029] Example 1 2 3 4 5 calcium salt calcium nitrate calcium nitrate calcium nitrate calcium phosphate calcium chloride Aluminum salt Aluminum nitrate Aluminum sulfate aluminum chlorid...

Embodiment 6-11

[0031] Take by weighing 0.0043mol nickel nitrate, 0.064mol calcium nitrate and 0.023mol aluminum nitrate, dissolve in 50ml water, dry at 120°C, and the product obtained is roasted under the conditions of Table 2 to obtain Ni-Ca-Al-O catalyst, in a fixed bed Fill Ni-Ca-Al-O catalyst in the medium, argon as carrier gas, take 1.296h -1 A phenol aqueous solution with a concentration of 0.0797 g / ml was introduced at a weight hourly space velocity of 0.0797 g / ml, the reaction temperature was 550° C., and the purity of hydrogen in the product after 15 minutes of reaction was shown in Table 2 below.

[0032] Table 2

[0033] Example 1 6 7 8 9 10 11 Calcination temperature (℃) 800 800 800 800 500 900 1000 Roasting time (h) 4 1 6 10 4 4 4 Hydrogen purity (%) 98.66 94.10 95.32 94.2 92.12 95.42 94.10

Embodiment 12-15

[0035] Weigh the calcium nitrate, aluminum nitrate and nickel nitrate shown in Table 3, dissolve them in 50ml of water, dry at 120°C, and roast the obtained product in a muffle furnace at 800°C for 4h to obtain Ni-Ca-Al-O catalyst. In the phenol adsorption enhanced steam reforming reaction, the Ni-Ca-Al-O catalyst was filled in the fixed-bed reactor, and argon was used as the carrier gas, with 1.296h -1 A phenol aqueous solution with a concentration of 0.0797 g / ml was introduced at a weight hourly space velocity of 0.0797 g / ml, and the reaction temperature was 550° C. After 15 minutes of reaction, the purity of hydrogen in the product and the conversion rate of phenol were shown in Table 3 below.

[0036] table 3

[0037] Example 12 1 13 14 15 Nickel nitrate (mol) - 0.0043 0.0086 0.0129 0.0172 Calcium nitrate (mol) 0.067 0.064 0.061 0.057 0.054 Aluminum nitrate (mol) 0.024 0.023 0.022 0.020 0.019 Hydrogen purity (%) 77.95 98...

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Abstract

The invention discloses a method for hydrogen production by phenol adsorption enhanced reforming. In this method, a fixed-bed reactor is filled with catalytic and CO absorption 2 Functional Ni-Ca-Al-O bifunctional catalyst, in the case of an inert gas as a carrier gas, with a weight hourly space velocity of 0.432-2.592h ‑1 A phenol solution with a concentration of 0.0399-0.1594g / ml is introduced, and the reaction temperature is 400-700°C; when CO 2 After the adsorption is saturated, the catalyst is regenerated at 500-1000°C for 0.1-3h in an inert atmosphere. The hydrogen purity obtained in the invention can reach more than 98%, the conversion rate of phenol can reach more than 99%, and the stability of catalysis and adsorption is good.

Description

technical field [0001] The invention belongs to the field of energy technology, and in particular relates to a method for hydrogen production by phenol adsorption enhanced reforming. Background technique [0002] In recent years, with the rapid growth of global energy demand, fossil energy has been consumed sharply, and serious environmental and climate problems have also been caused. Therefore, the research on the conversion of biomass resources into energy and chemical raw materials with the main purpose of finding substitutes for fossil raw materials has attracted the attention of many countries in the world. Hydrogen energy is regarded as the clean energy with the most development potential in the 21st century. Since the 1970s, hydrogen energy research has been widely carried out in many countries and regions in the world. Although most of the raw materials for hydrogen production currently use fossil fuels such as methane, considering environmental protection issues, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/32B01J23/78B01J23/94
CPCC01B3/326B01J23/002B01J23/78B01J23/94B01J2523/00B01J2523/23B01J2523/31B01J2523/847Y02P20/584
Inventor 余皓吴世杰王红娟曹永海彭峰
Owner SOUTH CHINA UNIV OF TECH
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