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Antioxidant and Photo-antioxidant Activities of Chalcone Derivatives
Chalcone Substituent position Conjugated system
2009/8/4
Chalcones are the starting materials for the biosynthesis of flavonoids. Flavonoids are strong antioxidants, which contain many phenolic hydroxyl group(s). However, the antioxidant activities of chal...
Antioxidant and Photo-antioxidant Activities of Phenylpropanoids
Tyrosine Phenylpropanoid p-Coumaric acid Antioxidant activity
2009/8/4
Phenylpropanoids are one of the metabolic products of phenylalanine and tyrosine. The antioxidant and photo- antioxidant activities were studied kinetically and along the metabolic pathway, to invest...
Catalytic Activities of Platinum Supported on Silica-modified Alumina for Hydrodesulfurization of Thiophene
Hydrodesulfurization Thiophene Platinum catalyst Silica modification
2009/8/4
Hydrodesulfurization (HDS) of thiophene over silica-modified alumina-supported platinum (Pt/SiO2-Al2O3) catalysts was examined. The HDS activity of a Pt/Al2O3 catalyst was enhanced by silica modifica...
Oxidative Regeneration of Resid Hydrodesulfurization Catalyst —Effect of Vanadium Accumulation on Properties and Activities of Regenerated Catalyst—
Oxidative regeneration Resid hydrodesulfurization Hydrodemetallation
2009/7/28
Resid hydrodesulfurization catalyst was regenerated after commercial operation and the effect of vanadium accumulation during resid hydrotreating reaction on the following catalyst regeneration was i...
Pretreatment of MFI Type Zeolites with Ethylene to Enhance Their Catalytic Activities for Dehydration of Ethanol
MFI type zeolite Pretreatment Ethylene Dehydration Ethanol
2009/7/28
The effects of the pretreatment of various types of zeolites such as H-ZSM5, H-mordenite, H-beta, HY and gallosilicate with ethylene on their activities for the dehydration of ethanol at low temperat...