${m{\alpha }}$-亚硝基-${m{\beta }}$-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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Enantiomerically Pure Chiral {CuII32}-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(II) 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. © 2016 American Chemical Society.
语种：
英文
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An Anionic Heptacopper(II) Oxo-Cluster {CuII7} 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 {Cu7} was obtained from a simple reaction in aqueous solution without heating. In a similar reaction, another cage compound {Sb12} 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 {Cu7} is confirmed by magnetization measurements. © 2015 American Chemical Society.
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：
tea saponin;intumescent flame retardant coatings;formulation;flame retardancy;thermal analysis
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.
语种：
英文
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