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Publication
Featured researches published by Chen Yongfu.
Reaction Kinetics and Catalysis Letters | 2000
Zhu Zhirong; Xie Zaiku; Chen Yongfu; Wang Refeng; Yao Yaping
Free phosphoric acid in the diatomite-phosphate solid acid catalysts was characterized by means of ion chromatography (IC), Hammett pH indicators and chemical titration. The results show that the free phosphoric acid is composed of 5∼35 wt.% H3PO4, 1∼7 wt.% H4P2O7 and < 1 wt.% polyphosphoric acid, and its composition determines the acid strength distribution of the catalyst. When the total amount of free phosphoric acid containing >3 wt.% H4P2O7 is within 9 ∼ 26 wt.% (in P2O5), the catalyst shows higher catalytic activity for propylene oligomerization with propylene conversion >75wt.%. Besides, free phosphoric acid has an important effect on the catalytic selectivity. The relationship between them is discussed.
Archive | 2003
Chen Yongfu; Zhu Zhirong; Lu Wenkui
Archive | 2003
Chen Yongfu; Zhang Lijun; Xu Jing
Archive | 2002
Zhu Qing; Yao Yaping; Chen Yongfu
Archive | 1999
Zhang Lijun; Huang Erfeng; Chen Yongfu
Archive | 2004
Chen Yongfu; Zhang Lijun; Jin Ping
Archive | 2003
Yuan Meiqing; Chen Yongfu; Yao Yaping
Archive | 2003
Chen Yongfu; Yao Yaping; Yuan Meiqin
Archive | 2003
Chen Yongfu; Zhang Lijun; Yao Yaping
Archive | 1998
Chen Yongfu; Huang Erfeng; Zhu Zhirong
