不同方法改性的镍负载柱撑蛭石对CH<sub>4</sub>与CO<sub>2</sub>重整反应的催化性能研究

伊尔夏提·地里夏提; 白翔; 纳森巴特; 古丽格纳·皮达买买提; 何晓燕; 赛亚尔·斯迪克

doi:10.6054/j.jscnun.2023030

不同方法改性的镍负载柱撑蛭石对CH₄与CO₂重整反应的催化性能研究

doi: 10.6054/j.jscnun.2023030

伊犁师范大学化学与环境科学学院/污染物化学与环境治理重点实验室, 伊宁 835000

基金项目:

伊犁师范大学博士科研专项项目 BSZX2021016

伊犁师范大学校级一般项目 2017YSYY17

详细信息

通讯作者:
赛亚尔·斯迪克，Email: 1051116295@qq.com

中图分类号: TE665.3;TQ426
计量
- 文章访问数: 15
- HTML全文浏览量: 9
- PDF下载量: 72
- 被引次数: 0
出版历程
- 收稿日期: 2022-05-01
- 网络出版日期: 2023-08-26
- 刊出日期: 2023-06-25

The Reforming Reaction of CH₄ and CO₂ Zed by Nickel-loading Column Vermiculite Modified by Different Methods

Key Laboratory of Pollutant Chemistry and Environmental Treatment/School of Chemistry and Environmental Sciences, Yili Normal University, Yining 835000, China

摘要

摘要: 采用新疆尉犁蛭石矿，依次经过HNO₃酸化、600 ℃煅烧、NaCl交换，再用Keggin离子插层，得到了羟基铝柱撑蛭石。以柱撑蛭石为载体制备了一系列Ni负载的催化剂(12Ni-CPVMT、12Ni-2CaO-CPVMT、12Ni-2MgO-PCVMT)并将其应用于甲烷重整反应。结果表明：12Ni-CPVMT的催化活性仅为17 h，二氧化碳的转化率低，12Ni-2CaO-CPVMT和12Ni-2CaO-PCVMT在反应3 h内表现出较高的催化活性和稳定性，但随后观察到失活。12Ni-2MgO-CPVMT催化剂在反应22 h后，甲烷的转化率降低至17.94%，而12Ni-2CaO-CPVMT催化剂在反应24 h内表现出较高的稳定性，甲烷的转化率仅降低了1.28%。这可能与其层间结构和膨胀的蛭石中的金属氧化物有关。
- 蛭石 /
- 膨胀 /
- 甲烷 /
- 羟基铝柱撑
Abstract: The reforming of CH₄ with CO₂ to produce syngas is not only beneficial to the rational utilization of natural gas resources and mitigation of greenhouse gas emissions, but also can be used to store solar energy and nuclear energy by effectively utilizing the reversible and strong heat absorption process of the reforming reaction. Therefore, it has received widespread attention from academia as well as industry worldwide. In this study, hydroxy aluminum columnar vermiculite was obtained by using Xinjiang Yuli vermiculite ore, which was acidified with HNO₃, cauterized at 600 ℃, exchanged with NaCl, and intercalated with Keggin ions in order to obtain hydroxy aluminum columnar vermiculite. A series of Ni-loaded catalysts (12Ni-CPVMT, 12Ni-2CaO-CPVMT, 12Ni-2MgO-PCVMT) were prepared for methane reforming reaction using column-supported vermiculite as the carrier. The results showed that the activity of 12Ni-CPVMT was only 17 h and the conversion of CO₂ was low. 12Ni-2CaO-CPVMT and 12Ni-2MgO-PCVMT showed high catalytic activity and stability within 3 h of reaction, but deactivation was subsequently observed. 12Ni-2MgO-CPVMT catalyst, after 22 h of reaction, reduced the conversion of methane to 17.94%. In contrast, 12Ni-2CaO-CPVMT showed high stability within 24 h of the reaction, and the conversion of methane was reduced by only 1.28%. This may be related to its interlayer structure and the metal oxides in the swollen vermiculite.
- vermiculite /
- expansion /
- methane /
- hydroxy aluminum column support

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图 1 实验装置图

Figure 1. The schematic for the experimental apparatus

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图 2 载体和催化剂的XRD图谱

Figure 2. The XRD pattern of the carrier and the catalyst

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图 3 不同催化剂的H₂-TPR谱

Figure 3. The H₂-TPR spectra of different catalysts

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图 4 反应20 h后催化剂的热重曲线

Figure 4. The thermal weight curves of the catalysts after 20 h of reaction

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图 5 催化剂还原后的XPS谱

Figure 5. The XPS spectra of catalyst after reduction

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图 6 还原后催化剂的TEM图

Figure 6. The TEM images of catalysts after reduction

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图 7 不同催化剂的稳定性

Figure 7. The stability of different catalysts

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图 8 反应温度对12Ni-2CaO-PCVMT催化剂活性的影响

Figure 8. The effects of the reaction temperature on the reactivity of the 12Ni-2CaO-PCVMT catalyst

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图 9 空速对12Ni-2CaO-PCVMT催化活性的影响

Figure 9. The effect of air speed on the reactivity of the 12Ni-2CaO-PCVMT catalyst

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