Publications by authors named "Shihong Feng"
polysaccharide has a wide range of biological activities. In this study, polysaccharides (BPs), BPs-1 (30 kDa) and BPs-2 (2000 kDa) with different molecular weights were isolated and prepared by ultrafiltration interception method. The structures of BPs, BPs-1 and BPs-2 were characterised by monosaccharide composition, GC-MS, Fourier transform infra-red spectroscopy and nuclear magnetic resonance.
View Article and Find Full Text PDFis a valuable plant for extracting tropane alkaloids. However, the mechanisms by which plant microbiome mediate the accumulation of tropane alkaloids in are still not well understood. In this study, we collected 55 wild populations on the Tibetan Plateau and the tropane alkaloids content, and root-related bacteria and fungi diversity were analyzed using HPLC and 16 s rDNA and ITS sequencing.
View Article and Find Full Text PDF[Preparation of Zinc Dibenzyl Dithiocarbamate and Its Spectral Analysis].
Guang Pu Xue Yu Guang Pu Fen Xi
December 2016
In the study, zinc methyl mercaptobenzimidazole (MMBZ) was synthesized by one-step method. MMBZ was detecued and characterized by FTIR, UV-Vis, XRD, TG-DSC. Its micro-structure and intrinsic regularity were revealed.
View Article and Find Full Text PDF[Study on the Preparation of Zinc Dibenzyl Dithiocarbamate and Its Spectral Analysis].
Guang Pu Xue Yu Guang Pu Fen Xi
August 2016
In the study, Zinc dibenzyl dithiocarbamate (ZBDC) was synthesized with one-step method. ZBDC was detected and characterized with FTIR，UV-Vis，XRD，TG-DSC. Its micro-structure and intrinsic regularity were revealed.
View Article and Find Full Text PDF[Preparation of δ-Valerolactone and Its Spectral Analysis].
Guang Pu Xue Yu Guang Pu Fen Xi
October 2015
Article Synopsis
- The study developed a catalyst composed of CuO/ZnO/Al2O3 using a sol-gel method and tested its effectiveness in converting 1,5-Pentanediol to δ-valerolactone through a gas-phase catalytic dehydrogenation process.
- Techniques like XRD and FTIR were utilized to analyze the catalyst's structure and the chemical properties of the products involved, revealing high purity of δ-valerolactone.
- The research highlighted the catalyst's deactivation and potential stability issues of δ-valerolactone, pointing out the need for strategies to enhance its stability for future industrial applications.
[Preparation of premonitory Li(x)MoS2 and its spectral analysis].
Guang Pu Xue Yu Guang Pu Fen Xi
March 2009
Under the effect of ultrasonic waves, premonitory Li(x)MoS2 was prepared by n-butyl lithium intercalating in the MoS2 layers, using the single-molecular-layer exfoliated-restacked technology. The value of x was in the range from 0.93 to 0.
View Article and Find Full Text PDF[Preparation of Mo-Fe catalysts by sol-gel method and its XRD, FTIR spectral analysis].
Guang Pu Xue Yu Guang Pu Fen Xi
February 2009
Article Synopsis
- The study examined how the atomic ratio of components in Mo-Fe catalysts affects their ability to selectively oxidize p-xylene using a sol-gel preparation method.
- The optimal atomic ratio found was n(Mo) : n(Fe) : n(Co) = 2.4 : 1 : 0.02, which resulted in high catalytic activity.
- The catalyst composition included Fe2(MoO4)3 and some MoO3, showing cooperative effects during the oxidation process, and the findings could inform improvements in industrial equipment.
[Purification of sulfolene and its UV-Vis and FTIR spectral analysis].
Guang Pu Xue Yu Guang Pu Fen Xi
February 2009
Article Synopsis
- Researchers explored a method for purifying raw sulfolene using activated carbon and exchange resin, measuring results with UV-Vis, FTIR, and XRD techniques.
- * Analyzing FTIR spectra highlighted the differences between sulfolene and sulfolane, emphasizing the effectiveness of the purification process.
- * The study achieved over 99.8% conversion efficiency in synthesizing high-quality sulfolane from the purified sulfolene, which could inform future industrial equipment improvements.