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Your search keyword '"Jiang, Gan"' showing total 4 results
Start Over Author "Jiang, Gan" Topic chemistry
4 results on '"Jiang, Gan"'

1. Direct Conversion of 5‐Hydroxymethylfurfural to Furanic Diether by Copper‐Loaded Hierarchically Structured ZSM‐5 Catalyst in a Fixed‐Bed Reactor

Author

Jiang Gan, Liangqi Chen, Jian Zhang, Hu Hualei, Weijie Cai, Lei Wang, Zhenxin Zhang, Fengzuo Qu, and Tingting Xue

Subjects
Inorganic Chemistry, chemistry, Chemical engineering, Fixed bed, 5-hydroxymethylfurfural, Organic Chemistry, chemistry.chemical_element, Physical and Theoretical Chemistry, ZSM-5, Copper, Catalysis, Bifunctional catalyst
Published
2021

2. Catalytic self-etherification of 5-hydroxymethylfurfural to 5,5′(oxy-bis(methylene))bis-2-furfural over zeolite catalysts: effect of pore structure and acidity

Author

Pilan Zhang, Jie Yang, Jian Zhang, Lei Wang, Hu Hualei, Jiang Gan, Yexin Zhang, Xiaoqiang Li, Chunlin Chen, and Hu Danxin

Subjects
chemistry.chemical_compound, chemistry, Mass transfer, 5-hydroxymethylfurfural, Organic chemistry, Methylene, Brønsted–Lowry acid–base theory, Mesoporous material, Furfural, Zeolite, Catalysis
Abstract

The self-etherification of 5-hydroxymethylfurfural (HMF) to 5,5′(oxy-bis(methylene))bis-2-furfural (OBMF) was investigated on ZSM-5, MCM-22, beta and hierarchical micro–mesoporous ZSM-5 (HMZ) catalysts. The hierarchically structured zeolites exhibited a superior intrinsic activity and good resistance to carbonaceous deposit; the latter could be ascribed to the lower mass transfer barrier in the mesopores of the HMZ catalysts. The structure–activity correlation showed that the catalytic activity mainly originated from one or several specific Bronsted acid sites, providing key clues to design efficient zeolite catalysts for producing OBMF.

Published
2020

3. Reuse of waste frying oil for production of rhamnolipids using Pseudomonas aeruginosa zju.u1M

Author

Jun-jiang Gan, Wen-jie Zhu, Yong Zhu, Bin Yao, Qin Meng, and Guo-liang Zhang

Subjects
Waste management, Pseudomonas aeruginosa, Chemistry, Industrial scale, General Engineering, Rhamnolipid, Reuse, equipment and supplies, medicine.disease_cause, Laboratory flask, chemistry.chemical_compound, Carbon source, Bioreactor, medicine, Fermentation, Food science
Abstract

In this work, rhamnolipid production was investigated using waste frying oil as the sole carbon source. By culture in shaking flasks, a naturally isolated strain synthesized rhamnolipid at concentration of 12.47 g/L and its mutant after treatment by UV light increased this productivity to 24.61 g/L. Fermentation was also conducted in a 50 L bioreactor and the productivity reached over 20 g/L. Hence, with a stable and high productive mutant strain, it could be feasible to reuse waste frying oil for rhamnolipid production on industrial scale.

Published
2007

4. Modeling and mapping the current and future distribution of Pseudomonas syringae pv. actinidiae under climate change in China.

Author

Wang, Rulin, Li, Qing, He, Shisong, Liu, Yuan, Wang, Mingtian, and Jiang, Gan

Subjects
PSEUDOMONAS syringae, CLIMATE change, KIWIFRUIT, EMISSIONS (Air pollution)
Abstract

Objective: Bacterial canker of kiwifruit caused by Pseudomonas syringae pv. actinidiae (Psa) is a major threat to the kiwifruit industry throughout the world and accounts for substantial economic losses in China. The aim of the present study was to test and explore the possibility of using MaxEnt (maximum entropy models) to predict and analyze the future large-scale distribution of Psa in China. Method: Based on the current environmental factors, three future climate scenarios, which were suggested by the fifth IPCC report, and the current distribution sites of Psa, MaxEnt combined with ArcGIS was applied to predict the potential suitable areas and the changing trend of Psa in China. The jackknife test and correlation analysis were used to choose dominant climatic factors. The receiver operating characteristic curve (ROC) drawn by MaxEnt was used to evaluate the accuracy of the simulation. Result: The results showed that under current climatic conditions, the area from latitude 25° to 36°N and from longitude 101° to 122°E is the primary potential suitable area of Psa in China. The highly suitable area (with suitability between 66 and 100) was mainly concentrated in Northeast Sichuan, South Shaanxi, most of Chongqing, West Hubei and Southwest Gansu and occupied 4.94% of land in China. Under different future emission scenarios, both the areas and the centers of the suitable areas all showed differences compared with the current situation. Four climatic variables, i.e., maximum April temperature (19%), mean temperature of the coldest quarter (14%), precipitation in May (11.5%) and minimum temperature in October (10.8%), had the largest impact on the distribution of Psa. Conclusion: The MaxEnt model is potentially useful for forecasting the future adaptive distribution of Psa under climate change, and it provides important guidance for comprehensive management. [ABSTRACT FROM AUTHOR]

Published
2018
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