Ultralow-weight loading Ni catalyst supported on two-dimensional vermiculite for carbon monoxide methanation

doi:10.1016/j.cjche.2017.10.024

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (9): 1873-1878.DOI: 10.1016/j.cjche.2017.10.024

• Catalysis, Kinetics and Reaction Engineering • 上一篇下一篇

Ultralow-weight loading Ni catalyst supported on two-dimensional vermiculite for carbon monoxide methanation

Mengjuan Zhang¹, Panpan Li¹, Mingyuan Zhu¹, Zhiqun Tian², Jianming Dan^1,3,4, Jiangbing Li¹, Bin Dai¹, Feng Yu¹

1 Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China;
2 Collaborative Innovation Center of Renewable Energy Materials, Guangxi University, Nanning 530004, China;
3 Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, Shihezi 832003, China;
4 Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region, Shihezi 832003, China

收稿日期:2017-07-07 修回日期:2017-10-21 出版日期:2018-09-28 发布日期:2018-10-17
通讯作者: Feng Yu,E-mail address:yufeng05@mail.ipc.ac.cn
基金资助:
Supported by the National Natural Science Foundation of China (U1203293, 21163015), the Doctor Foundation of Bingtuan (2013BB010), Program of Science and Technology Innovation Team in Bingtuan (2015BD003), and Program for Changjiang Scholars, Innovative Research Team in University (IRT_15R46).

Ultralow-weight loading Ni catalyst supported on two-dimensional vermiculite for carbon monoxide methanation

Mengjuan Zhang¹, Panpan Li¹, Mingyuan Zhu¹, Zhiqun Tian², Jianming Dan^1,3,4, Jiangbing Li¹, Bin Dai¹, Feng Yu¹

1 Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China;
2 Collaborative Innovation Center of Renewable Energy Materials, Guangxi University, Nanning 530004, China;
3 Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, Shihezi 832003, China;
4 Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region, Shihezi 832003, China

Received:2017-07-07 Revised:2017-10-21 Online:2018-09-28 Published:2018-10-17
Contact: Feng Yu,E-mail address:yufeng05@mail.ipc.ac.cn
Supported by:
Supported by the National Natural Science Foundation of China (U1203293, 21163015), the Doctor Foundation of Bingtuan (2013BB010), Program of Science and Technology Innovation Team in Bingtuan (2015BD003), and Program for Changjiang Scholars, Innovative Research Team in University (IRT_15R46).

摘要/Abstract

摘要： Nickel-based catalysts represent the most commonly used systems for CO methanation. We have successfully prepared a Ni catalyst system supported on two-dimensional plasma-treated vermiculite (2D-PVMT) with a very low Ni loading (0.5 wt%). The catalyst precursor was subjected to heat treatment via either conventional heat treatment (CHT) or the plasma irradiation method (PIM). The as-obtained CHT-Ni/PVMT and PIM-Ni/PVMT catalysts were characterized with scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM). Additionally, CHT-NiO/PVMT and PIM-NiO/PVMT catalysts were characterized with hydrogen temperature programmed reduction (H₂-TPR). Compared with CHT-Ni/PVMT, PIM-Ni/PVMT exhibited superior catalytic performance. The plasma treated catalyst PIM-Ni/PVMT achieved a CO conversion of 93.5% and a turnover frequency (TOF) of 0.8537 s^-1, at a temperature of 450℃, a gas hourly space velocity of 6000 ml·g^-1·h^-1, a synthesis gas flow rate of 65 ml·min^-1, and a pressure of 1.5 MPa. Plasma irradiation may provide a successful strategy for the preparation of catalysts with very low metal loadings which exhibit excellent properties.

关键词: Nickel-based catalysts, Synthetic gas, Synthetic natural gas, Two-dimensional vermiculite, Carbon monoxide methanation, Plasma irradiation method

Abstract: Nickel-based catalysts represent the most commonly used systems for CO methanation. We have successfully prepared a Ni catalyst system supported on two-dimensional plasma-treated vermiculite (2D-PVMT) with a very low Ni loading (0.5 wt%). The catalyst precursor was subjected to heat treatment via either conventional heat treatment (CHT) or the plasma irradiation method (PIM). The as-obtained CHT-Ni/PVMT and PIM-Ni/PVMT catalysts were characterized with scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM). Additionally, CHT-NiO/PVMT and PIM-NiO/PVMT catalysts were characterized with hydrogen temperature programmed reduction (H₂-TPR). Compared with CHT-Ni/PVMT, PIM-Ni/PVMT exhibited superior catalytic performance. The plasma treated catalyst PIM-Ni/PVMT achieved a CO conversion of 93.5% and a turnover frequency (TOF) of 0.8537 s^-1, at a temperature of 450℃, a gas hourly space velocity of 6000 ml·g^-1·h^-1, a synthesis gas flow rate of 65 ml·min^-1, and a pressure of 1.5 MPa. Plasma irradiation may provide a successful strategy for the preparation of catalysts with very low metal loadings which exhibit excellent properties.

Key words: Nickel-based catalysts, Synthetic gas, Synthetic natural gas, Two-dimensional vermiculite, Carbon monoxide methanation, Plasma irradiation method

Mengjuan Zhang, Panpan Li, Mingyuan Zhu, Zhiqun Tian, Jianming Dan, Jiangbing Li, Bin Dai, Feng Yu. Ultralow-weight loading Ni catalyst supported on two-dimensional vermiculite for carbon monoxide methanation[J]. Chinese Journal of Chemical Engineering, 2018, 26(9): 1873-1878.

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Ultralow-weight loading Ni catalyst supported on two-dimensional vermiculite for carbon monoxide methanation

Ultralow-weight loading Ni catalyst supported on two-dimensional vermiculite for carbon monoxide methanation

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