Milad Rasouli, Nakisa Yaghobi, Seyedeh Zahra Movassaghi Gilani, 等. Influence of monovalent alkaline metal cations on binder-free nano-zeolite X in para-xylene separation[J]. 中国化学工程学报(英文版), 2015,23(1):64-70.
Milad Rasouli, Nakisa Yaghobi, Seyedeh Zahra Movassaghi Gilani, Hossein Atashi, Majid Rasouli . Influence of monovalent alkaline metal cations on binder-free nano-zeolite X in para-xylene separation[J]. Chin.J.Chem.Eng., 2015, 23(1): 64-70.
Milad Rasouli, Nakisa Yaghobi, Seyedeh Zahra Movassaghi Gilani, 等. Influence of monovalent alkaline metal cations on binder-free nano-zeolite X in para-xylene separation[J]. 中国化学工程学报(英文版), 2015,23(1):64-70.DOI: 10.1016/j.cjche.2014.11.005.
Milad Rasouli, Nakisa Yaghobi, Seyedeh Zahra Movassaghi Gilani, Hossein Atashi, Majid Rasouli . Influence of monovalent alkaline metal cations on binder-free nano-zeolite X in para-xylene separation[J]. Chin.J.Chem.Eng., 2015, 23(1): 64-70.DOI: 10.1016/j.cjche.2014.11.005.
Influence of monovalent alkaline metal cations on binder-free nano-zeolite X in para-xylene separation
摘要
Abstract
The adsorption process was studied for separating para-xylene fromxylenemixture on modified nano-zeolite X in a breakthrough system. Nano-zeolitic adsorbent with different ratios of SiO
2
/Al
2
O
3
was synthesized through hydrothermal process and ion-exchanged with alkaline metal cations like lithium
sodium and potassium. The product was characterized by X-ray diffraction
scanning electron microscopy (SEM)
nitrogen adsorption
transform electron microscopy (TEM) and in situ Fourier transform infrared (FTIR) spectroscopy. The influence of nano-zeolite water content and desorbent type on the selectivity of para-xylene toward other C
8
aromatic isomers was studied. The optimization of adsorption process was also investigated under variable operation conditions. The isotherm for each isomer of C
8
aromatics and the desorbents possess the adsorption characteristics of Langmuir type. The selectivity factor of para-xylene relative to each of meta-xylene
ortho-xylene and ethylbenzene under the optimum conditions obtained to be 5.36
2.43 and 3.22
in the order given.
关键词
Keywords
references
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相关作者
Abdolraouf Samadi-Maybodi
Mohsen Nikou
Lei Hu
Shunhui Tao
Junting Xian
Xiaodong Zhang
Yao Liu
Xiaojie Zheng
相关机构
Analytical Division, Faculty of Chemistry, University of Mazandaran, Babolsar
School of Chemical Engineering and Light Industry, Guangdong University of Technology
Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology
Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Guangdong University of Technology