Henan University of Technology

About: Henan University of Technology is a education organization based out in Zhengzhou, China. It is known for research contribution in the topics: Catalysis & Starch. The organization has 7648 authors who have published 6503 publications receiving 73067 citations. The organization is also known as: Hénán Gōngyè Dàxué.

Xylitol fermentation using hemicellulose hydrolysate prepared by acid pre‐impregnated steam explosion of corncob

Abstract: BACKGROUND Steam explosion is widely used on a variety of plant biomass for the hydrolysis of hemicellulose. However, hydrolysis by steam explosion suffers from low xylose yield, long hydrolysis time and high energy consumption, which impede the xylitol fermentation step. This study used a dilute sulfuric acid pre-impregnation prior to the steam explosion to prepare corncob hemicellulose hydrolysate which offers high xylose yield for xylitol fermentation by Candida tropicalis. RESULTS After pre-impregnation with 0.3% (wt) dilute sulfuric acid at a liquid to corncob ratio of 3 for 6 h, corncobs were steamed at 200 °C for 5 min to obtain a maximum xylose yield of 23.5% in the hydrolysate. The hydrolysate was detoxified by concentrating with vacuum evaporation followed by adsorption using activated carbon. The detoxified hydrolysate was then used for xylitol fermentation. Maximum xylitol yield of 75.1%, volumetric productivity of 2.01 g L-1 h and biomass of 20.9 g L-1 were obtained from the detoxified hydrolysate. CONCLUSION Findings suggested that this acid pre-impregnated steam explosion strategy provides a highly effective way to prepare hemicellulose hydrolysate with high xylose yield, and could be potentially applied to industrial xylitol fermentation. © 2013 Society of Chemical Industry

The impact of corporate environmental responsibility on financial performance—based on Chinese listed companies

Abstract: In recent years, environmental protection issues have come under the spotlight. This paper constructs a corporate environmental responsibility evaluation index and examines the impact of environmental responsibility performance on financial performance in China based on the information of A-share listed companies disclosed in the "Company Annual Report" and "Social Responsibility Report" from 2008 to 2017. The empirical results show that: (1) without considering the quality of environmental information, fulfilling environmental responsibility can significantly improve the corporate financial performance; (2) after incorporating the quality of environmental responsibility performance and classifying corporations into subgroups by region and attribute, the fulfillment of environmental responsibility has a significant positive impact on the corporate financial performance in the sample of eastern region and non-state-holding companies, with a lag effect, while it has a negative impact in the sample of central region. The research above politically suggests that the Chinese government should establish a long-term management mechanism to encourage companies to fulfill their environmental responsibilities, improve the evaluation system of corporate environmental responsibility performance quality, as well as provide matching financial support or other compensation, thereby realize the sound and sustainable development of companies and the society.

One-step hydrothermal synthesis of Li2FeSiO4/C composites as lithium-ion battery cathode materials

Abstract: Li2FeSiO4/C composites were one-step synthesized under hydrothermal conditions at 200 °C for 72 h using glucose as carbon source. By adjusting the quantity of added glucose, we obtained varied Li2FeSiO4/C composites with different size and morphology. A series of electrochemical tests demonstrate that the Li2FeSiO4/C nanoparticles with diameters about 20 nm have higher discharge capacity, and slower capacity fading in comparison with Li2FeSiO4 and other Li2FeSiO4/C composites. Li2FeSiO4/C nanoparticles deliver a discharge capacity of 136 mAh g−1 at 0.2 C, and after 100 cycles, the discharge capacity remains 96.1%. Furthermore, Li2FeSiO4/C nanoparticles also exhibit an excellent rate capability with a capacity of about 80 mAh g−1 at 10 C.