Guangyu Dou

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A new, cleaner process to produce diosgenin (CAS number 512-04-9) from Dioscorea zingiberensis with much less pollutant generation has been developed based on physical separation. A demonstration factory with an annual production capacity of 200 t of diosgenin has been built in Shanyang County, Shaanxi Province, China. The new process employs several new(More)
A series of iron oxide supported on alumina-intercalated clay catalysts (named Fe/Al-Lap catalysts) with mesoporous structure and high specific surface area were prepared. The structural and chemical properties were studied by nitrogen sorption isotherms, X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (UV-vis DRS), X-ray photoelectron spectra(More)
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