|
1
|
Huang L, Yan L, Tang M, Wang G, Qin Z, Ge H. Effect of Pretreatment on the Adsorption Performance of Ni/ZnO Adsorbent for Dibenzothiophene Desulfurization. ACS OMEGA 2018; 3:18967-18975. [PMID: 31458461 PMCID: PMC6644289 DOI: 10.1021/acsomega.8b02843] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 12/25/2018] [Indexed: 06/10/2023]
Abstract
Ni/ZnO was prepared by co-precipitation and used as adsorbent for reactive adsorption desulfurization (RADS) of dibenzothiophene. The effect of calcination temperature, precipitate washing solvent, and reduction temperature on the adsorption performance of Ni/ZnO was investigated. It is observed that Ni/ZnO adsorbent calcined at 350 °C, washed with ethanol, and unreduced or reduced at low temperature performed best. By the characterization of BET, XRD, TPR, FTIR, and in situ XAFS, the optimal calcination temperature leads to the small crystallite of NiO and ZnO species. Washing with ethanol enhances the surface area of adsorbent and decreases its particle size. The influence of reduction temperature on the RADS performance is stronger than that of calcination temperature, which is ascribed to high-temperature reduction that makes the adsorbent easier to sinter and form a Ni-Zn alloy. The high RADS activity is a result of the adsorbent pretreatment conditions, which can form small Ni and ZnO particles, and the synergism between precursors.
Collapse
Affiliation(s)
- Lichun Huang
- Ordos
Dalu Institute of Coal Chemical Industry, Ordos, Inner Mongolia 010321, China
- Synfuels
China Inner Mongolia Co., Ltd, Ordos, Inner Mongolia 010320, China
| | - Lai Yan
- Ordos
Dalu Institute of Coal Chemical Industry, Ordos, Inner Mongolia 010321, China
- Synfuels
China Inner Mongolia Co., Ltd, Ordos, Inner Mongolia 010320, China
| | - Mingxing Tang
- State
Key Laboratory of Coal Conversion, Institute
of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China
| | - Guofu Wang
- State
Key Laboratory of Coal Conversion, Institute
of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China
| | - Zhangfeng Qin
- State
Key Laboratory of Coal Conversion, Institute
of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China
| | - Hui Ge
- State
Key Laboratory of Coal Conversion, Institute
of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China
| |
Collapse
|