课程思政背景下“普通化学”教学改革与探索
作者:
刘湛军;孟维;祝小艳
期刊:
广东化工 ,2020年47(23):162-163 ISSN:1007-1865
作者机构:
湖南城市学院材料与化学工程学院,黑茶金花湖南省重点实验室,湖南益阳413000;[祝小艳; 刘湛军; 孟维] 湖南城市学院
关键词:
课程施政;《普通化学》;教学改革
摘要:
《普通化学》是一门介绍物质及其变化规律的中心性学科,是为国家培养又红又专高素质专业技术人才所必须开设的一门基础课程。为更好地适应课程思政背景下国家提出的"以学生为中心"的教学改革理念,本文分析了我校《普通化学》课程在教学内容、教学设计、教学方法、课堂管理和成绩考核评价方式等方面存在的问题。期望通过增加课程思政元素、改革教学内容、创新教学方法、完善考评机制等改革措施,有效调动学生的学习积极性,提高《普通化学》课程的教学效果。
语种:
中文
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活化黑茶渣对硝基苯的吸附性能研究
作者:
何柳;李宙利;孙嘉希;孟维
作者机构:
湖南城市学院,材料与化学工程学院,益阳,413000
会议名称:
中部四省化学化工学会2017年学术年会
会议时间:
20171027
会议地点:
长沙
会议论文集名称:
中部四省化学化工学会2017年学术年会论文集
关键词:
活化;黑茶渣;硝基苯;吸附动力学
摘要:
研究甲醛、蒸汽、超声、硝酸活化和未活化黑茶渣对水溶液中硝基苯的吸附性能。考察了吸附时间、温度、pH,吸附剂用量、硝基苯浓度对黑茶渣吸附硝基苯的影响,并测定了其吸附动力学;测定了五种活化黑茶渣对硝基苯在不同温度的吸附等温线。
语种:
中文
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${\rm{\alpha }}$-亚硝基-${\rm{\beta }}$-萘酣活化浮选氧化锌矿试验研究
作者:
孟维;莫红兵;周伟;许峰;徐伟箭;...
期刊:
湖南大学学报(自然科学版) ,2017年44(6):107-111 ISSN:1674-2974
通讯作者:
Xu, Weijian(weijxu@hnu.edu.cn)
作者机构:
[孟维; 许峰; 莫红兵; 欧恩才; 周伟; 徐伟箭] College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China;[孟维] Department of Materials &, Chemistry Engineering, Hunan City University, Yiyang, 413000, China
通讯机构:
College of Chemistry and Chemical Engineering, Hunan University, Changsha, China
关键词:
${\rm{\alpha }}$-亚硝基-${\rm{\beta }}$-萘酚;十八胺;活化剂;氧化锌矿石;浮选
摘要:
采用${\rm{\alpha }}$-亚硝基-${\rm{\beta }}$-萘酚为活化剂和十八胺为捕收剂对氧化锌矿石浮选,并考察其作用机理.结果表明,活化剂、捕收剂、分散剂的类型和用量是影响锌的品位和回收率的主要因素,${\rm{\alpha }}$-亚硝基-${\rm{\beta }}$-萘酚是氧化辞矿石浮选的有效活化剂.用木质素磺酸钙作为分散剂,经 ${\rm{\alpha }}$-亚硝基-${\rm{\beta }}$-萘酚活化后,在${\rm{pH}} = 9.5$时,锌的品位从初始等级的22.30%达到了38.26%,回收率达到87.90%.红外光谱分析表明,在矿物表面${\rm{\alpha }}$-亚硝基-${\rm{\beta }}$-萘酚和${\rm{Z}}{{\rm{n}}^{2 + }}$配位通过Zn-O键形成六元环,从而增强矿物表面的疏水性.
语种:
中文
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活化黑茶渣对硝基苯的吸附性能研究
作者:
何柳;李宙利;孙嘉希;孟维
作者机构:
湖南城市学院,材料与化学工程学院,益阳,413000
会议名称:
中部四省化学化工学会2017年学术年会
会议时间:
2017-10-27
会议地点:
长沙
会议论文集名称:
中部四省化学化工学会2017年学术年会论文集
关键词:
活化;黑茶渣;硝基苯;吸附动力学
摘要:
研究甲醛、蒸汽、超声、硝酸活化和未活化黑茶渣对水溶液中硝基苯的吸附性能。考察了吸附时间、温度、pH,吸附剂用量、硝基苯浓度对黑茶渣吸附硝基苯的影响,并测定了其吸附动力学;测定了五种活化黑茶渣对硝基苯在不同温度的吸附等温线。
语种:
中文
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Enantiomerically Pure Chiral {Cu-32(II)}-Based 2D-Layered Frameworks: From the Asymmetric Octacopper(II) Subcomponents to 3D Hierarchical Supramolecular Structures
作者:
Meng, Wei;Xu, Feng* ;Xu, Weijian*
期刊:
INORGANIC CHEMISTRY ,2016年55(6):2673-2675 ISSN:0020-1669
通讯作者:
Xu, Feng;Xu, Weijian
作者机构:
[Xu, Weijian; Xu, Feng; Meng, Wei; Xu, F; Xu, WJ] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.;[Meng, Wei] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构:
[Xu, F; Xu, WJ] H;Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
摘要:
Two new chiral copper(II) coordination polymers comprising octacopper(ll) subcomponents were synthesized through investigation of the interplay among tartrate ligands, guanidinium cations, and metals, Our analysis. confirms that these compounds are enantiomers exhibiting 3D hierarchical supramolecular structures that are constituted by 2D sublayers and sustained by noncovalent bonding interactions.
语种:
英文
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An Anionic Heptacopper(II) Oxo-Cluster {Cu-7(II)} with an S=7/2 Ground State
作者:
Meng, Wei;Xu, Feng* ;Xu, Weijian*
期刊:
INORGANIC CHEMISTRY ,2016年55(2):540-542 ISSN:0020-1669
通讯作者:
Xu, Feng;Xu, Weijian
作者机构:
[Xu, Weijian; Xu, Feng; Meng, Wei; Xu, F; Xu, WJ] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.;[Meng, Wei] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构:
[Xu, F; Xu, WJ] H;Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
摘要:
An anionic heptacopper(II) oxo-cluster {Cu-7} was obtained from a simple reaction in aqueous solution without heating. In a similar reaction, another cage compound {Sb-12} with an encapsulated {Cu2} core was produced, implying the structural versatility of copper(II)-oxide assemblies constructed from potassium antimonyl tartrate as the ligand in aqueous solution. The ferromagnetic S = 7/2 ground state of {Cu-7} is confirmed by magnetization measurements.
语种:
英文
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Formulation of intumescent flame retardant coatings containing natural-based tea saponin
作者:
Qian, Wei;Li, Xiang-Zhou* ;Wu, Zhi-Ping;Liu, Yan-Xin;Fang, Cong-Cong;...
期刊:
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ,2015年63(10):2782-2788 ISSN:0021-8561
通讯作者:
Li, Xiang-Zhou
作者机构:
[Li, Xiang-Zhou; Liu, Yan-Xin; Wu, Zhi-Ping; Qian, Wei] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Li, Xiang-Zhou] Forest Area South China, State Key Lab Ecol Appl Technol, Changsha 410004, Hunan, Peoples R China.;[Qian, Wei] Guangdong Vocat Coll Environm Protect Engn, Foshan 528216, Guangdong, Peoples R China.;[Liu, Yan-Xin] Changsha Univ Sci & Technol, Sch Chem & Bioengn, Changsha 410114, Hunan, Peoples R China.;[Fang, Cong-Cong] Cent South Univ Forestry & Technol, Business Sch, Changsha 410004, Hunan, Peoples R China.
通讯机构:
[Li, Xiang-Zhou] C;Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
关键词:
Blowing agents;Carbon;Coatings;Combustion;Metabolites;Thermoanalysis;Thermodynamic stability;Combustion behavior;Flame retardancy;Flame retardant system;formulation;Intumescent flame retardant;Intumescent flame-retardant coating;Tea saponins;Thermal analyzers;Flame retardants;Camellia;Camellia oleifera;Theaceae;flame retardant;plant extract;saponin;Camellia;chemistry;Camellia;Flame Retardants;Plant Extracts;Saponins
摘要:
Natural product tea saponin (TS), extracted from the nutshell of camellia (Camellia oleifera Abel, Theaceae), was introduced into intumescent flame retardant formulations as blowing agent and carbon source. The formulations of the flame retardant system were optimized to get the optimum proportion of TS, and intumescent flame retardant coatings containing tea saponin (TS-IFRCs) were then prepared. It was found that TS can significantly affect the combustion behavior and the thermal stability of TS-IFRCs evaluated by cone calorimetry and simultaneous thermal analyzer, respectively. It was shown that TS, degraded to water vapor and carbon at high temperatures, can combine with other components to form a well-developed char layer. The char layer was supposed to inhibit erosion upon exposure to heat and oxygen and enhance the flame retardancy of TS-IFRCs. In addition, the smoke release of TS-IFRCs was also studied, which provided a low amount of smoke production. © 2015 American Chemical Society.
语种:
英文
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