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| 1 | Molecular Simulation of Transesterification of Ethylene Carbonate and Methanol Catalyzed by Ionic Liquids显示文摘Four ionic liquids [BMIM]OH, [BMIM]IM, [BMIM]Br, and [BMIM]PF6 were synthesized and characterized by infrared spectroscopy. Then the effects of ionic liquids(ILs), cocatalysts, and reaction temperature on the catalytic performance for transesterification of ethylene carbonate and methanol were investigated with orthogonal experiments. The influence of cations and anions of ILs on catalytic activity was revealed by the density functional theory(DFT). The reaction mechanism was proposed based on the experimental results and DFT. The results demonstrated that the optimal catalyst was [Bmim]PF6/CaO, which exhibited the advantages of high activity, excellent stability, and easy recycling. Under the optimized conditions covering a catalytic temperature of 130 °C, an ionic liquid/cocatalyst mass ratio of 5:1, and a catalyst dosage of 4.0%, the conversion rate could reach 65.23% with a dimethyl carbonate selectivity of 98.95%. No significant loss of catalyst activity was detected after 7 recycle times. | Guo Liying Wu Hao Wang Yirong Cui Zhongyi Chen Yanming | 2019 | China Petroleum Processing & Petrochemical Technology2019,21,4: | 1 |
| 2 | A free-standing-type design for cathodes of rechargeable Li-O2 batteries显示文摘 | Cui Yanming Wen Zhaoyin Liu Yu | 2011 | Energy & Environmental Science2011,4,11: | 1 |
| 3 | 显示文摘 | Hao Yanming Cui Chunxiang Meng Fanbin | 2003 | Acta Physica Sinica2003,52,: | 1 |
| 4 | A novel TiO 2? x N x /BN composite photocatalyst: Synthesis, characterization and enhanced photocatalytic activity for Rhodamine B degradation under visible light显示文摘 | Dong Liu Wenquan Cui Jing Lin Yanming Xue Yang Huang Jie Li Jun Zhang Zhenya Liu Chengchun Tang | 2014 | Catalysis Communications2014,,: | 1 |
| 5 | Pilot survey of raw whole milk in China for Listeria monocytogenes using PCR显示文摘 | Pengbo Ning Kangkang Guo Liang Cheng Lei Xu Chengcheng Zhang Hongjie Cui Yuanyuan Cheng Rui Xu Wei Liu Qizhuang Lv Weiwei Cao Yanming Zhang | 2013 | Food Control2013,,1: | 1 |
| 6 | Overexpression of GsZFP1 enhances salt and drought tolerance in transgenic alfalfa ( Medicago sativa L.)显示文摘 | Lili Tang Hua Cai Wei Ji Xiao Luo Zhenyu Wang Jing Wu Xuedong Wang Lin Cui Yang Wang Yanming Zhu Xi Bai | 2013 | Plant Physiology and Biochemistry2013,,: | 1 |
| 7 | Neighborhood diversity structure and neighborhood species richness effects differ across life stages in a subtropical natural secondary forest显示文摘Natural secondary forest has a strong capacity to regrow naturally and recover biodiversity rapidly on abandoned lands.However,at the neighborhood scale,which can truly reflect the facilitative or competitive interactions among individual plants,the local diversity spatial structure in secondary forest and the feedback effects of neighborhood diversity on natural regeneration remain unclear,and this may be the key to properly understand the mechanisms of natural secondary forest species diversity recovery.To this end,this study established a dynamic plot in a rehabilitated secondary forest after disturbance and conducted a comprehensive survey of 68,336 individual plants with repeated measurements at 5-year interval to assess the characteristics of neighborhood diversity structure across life history stages and link the neighborhood species richness(NSR)effect translated by species interactions at species diversity structure with individual trees recruitment/mortality in secondary forest regeneration.The results showed that,compared with tropical and temperate natural forests,a higher proportion of diversity accumulators and a lower proportion of repellers in subtropical secondary forests resulted in neighborhood diversity structures characterized by heterospecific or high-diversity patches,which are beneficial to the maintenance or restoration of biodiversity.As an important supplement to the research on the relationship between diversity and productivity,our findings show a positive diversity-survival relationship in subtropical secondary forests.Importantly,we observed that the neighborhood diversity structure exhibited a trend of accumulator-dominated to neutral-dominant changes with life stage from sapling to adult,which,in turn,determined the direction and strength of NSR effects on recruitment/mortality.Specifically,diverse local neighborhoods at a later successional stage characterized with‘neutral’species-species interactions can act as a‘welfare net’by offering favorable microhabitats for the most vulnerable recruitments or saplings,i.e.,the NSR effects that promoted individual recruitment/survival in our study.These results not only enrich our understanding of the biodiversity-productivity-survival relationship but also highlight the importance of retaining latesuccessional species of native trees in intensive forest production or in situ conservation policies. | Haonan Zhang Shuifei Chen Xiao Zheng Xiaomin Ge Yao Li Yanming Fang Peng Cui Hui Ding | 2022 | Forest Ecosystems2022,9,6: | 0 |