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Your search keyword '"Wang Ying-Hua"' showing total 21 results
Start Over Author "Wang Ying-Hua" Publisher elsevier bv
21 results on '"Wang Ying-Hua"'

6. Solid superacid-catalyzed hydroconversion of an extraction residue from Lingwu bituminous coal

Author

Zong Zhi-min, Sun Bing, Liu Zi-Wu, Yue Xiao-ming, Wei Xian-Yong, and Wang Ying-Hua

Subjects
lcsh:TN1-997, Chromatography, Cyclohexane, business.industry, Inorganic chemistry, Energy Engineering and Power Technology, Geotechnical Engineering and Engineering Geology, Coal liquefaction, Catalysis, Solvent, chemistry.chemical_compound, Residue (chemistry), chemistry, Geochemistry and Petrology, Desorption, Coal, Superacid, business, lcsh:Mining engineering. Metallurgy
Abstract

A solid superacid was prepared as a catalyst. The catalyst was characterized by ammonia temperature-programmed desorption, surface property measurement, and analyses with scanning electron microscopy and Fourier transform infrared spectrometry. A extraction residue from Lingwu subbituminous coal was subject to non-catalytic and catalytic hydroconversion using cyclohexane as the solvent under pressurized hydrogen at 300 °C for 3 h. The results show that the total yield of petroleum ether-extractable arenes from catalytic hydroconversion is much higher than that from non-catalytic hydroconversion. The cleavage of Car–Calk bonds in the residue could significantly proceed during catalytic hydroconversion. Keywords: Solid superacid, Hydroconversion, GC/MS analysis, Coal liquefaction

Published
2012

9. Four isoprenoid-substituted flavonoids from Glycyrrhiza aspera

Author

Taro Nomura, Juno Nishizawa, Toshio Fukai, Zeng Lu, and Wang Ying-Hua

Subjects
biology, Chemistry, Stereochemistry, Chemical structure, Plant Science, General Medicine, Horticulture, Isoflavones, biology.organism_classification, Glycyrrhiza aspera, Biochemistry, Terpenoid, chemistry.chemical_compound, Isoflavone Derivatives, Glycyrrhiza, Molecular Biology
Abstract

Two new isoprenoid-substituted isoflavanones, glyasperins K and M, a 3-arylcoumarin, glyasperin L, and an isoflavone, glyasperin N, were isolated from the roots of Glycyrrhiza aspera. The structures of glyasperins K-N were elucidated by spectroscopic methods.

Published
1994

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