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Thermal decomposition behaviour of polyacrylamidomethyltrimethyl ammonium chloride in red mud separation process 被引量:2
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作者 胡慧萍 张琨瑜 +1 位作者 张丽娟 陈启元 《Journal of Central South University of Technology》 EI 2008年第6期808-813,共6页
In order to provide references for selecting highly efficient red mud flocculants, the behaviour of polyacrylamidomethyltrimethyl ammonium chloride (PATAC) in red mud separation process was investigated. PATAC was e... In order to provide references for selecting highly efficient red mud flocculants, the behaviour of polyacrylamidomethyltrimethyl ammonium chloride (PATAC) in red mud separation process was investigated. PATAC was employed as a flocculant for red mud separation from the caustic aluminate liquor at 95 ℃. The used red mud was generated from Chinese diaspore bauxite in Bayer process of alumina production. And the changes of PATAC before or after being treated in caustic solution at 95 ℃ were studied by thermogravimetry (TG) and Fourier transform infrared (FTIR) spectral analysis. The results show that PATAC fails in effectively focculating red mud and PATAC is readily converted to a quaternary ammonium hydroxide (PATAH) in caustic solution. PATAH can be decomposed to a new polymer (HPATAH) even at 95 ℃. Furthermore, there is an intramolecular hydrogen bond formed in the HPATAH polymer chain with two functional groups of--CH2--OH and --CONH2. Therefore, the poor flocculation property of PATAC for red mud separation can be attributed to the thermal decomposition of PATAC in the caustic red mud slurry at 95 ℃ and the formation of intramolecular hydrogen bond in the polymer chain of HPATAH during the thermal decomposition, which causes the absorbable functional groups of PATAC to decrease greatly. 展开更多
关键词 ALUMINA red mud polyacrylamidomethyltrimethyl ammonium chloride (PATAC) SETTLEMENT thermal decomposition intramolecular hydrogen bond
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泛亚汽车技术中心有限公司(PATAC)
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《世界汽车》 2015年第10期143-,共1页
成立于1997年6月12日,注册资金6900万美元,由上海汽车集团股份有限公司、通用汽车公司各出资50%组建,是中国首家合资设立的专业汽车技术与设计中心。泛亚将通用汽车的先进技术和专业管理能力,与上汽对中国国内市场的充分了解和丰富经验... 成立于1997年6月12日,注册资金6900万美元,由上海汽车集团股份有限公司、通用汽车公司各出资50%组建,是中国首家合资设立的专业汽车技术与设计中心。泛亚将通用汽车的先进技术和专业管理能力,与上汽对中国国内市场的充分了解和丰富经验完美结合,提供世界级的汽车工程服务。泛亚始终走在中国汽车设计开发的最前沿。别克、雪佛兰、凯迪拉克等系列车型的引进和开发,均取得辉煌成功。 展开更多
关键词 汽车技术 上海汽车集团 通用汽车公司 PATAC 设计中心 专业汽车 别克 工程服务 专业管理 中国
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Restoration of the outer treasury and exhibition of the section of arms and armours in Topkapl palace museum
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作者 Hasan Flrat Diker 《Frontiers of Architectural Research》 CSCD 2012年第4期365-374,共10页
This article aims at telling the story of restoration and exhibition of the Section of Arms and Armours (the Outer Treasury) in Topkapl Palace Museum. During this process, not only was the structure experiencing res... This article aims at telling the story of restoration and exhibition of the Section of Arms and Armours (the Outer Treasury) in Topkapl Palace Museum. During this process, not only was the structure experiencing restoration and consolidation, but also was the first archeological excavation being realized in a closed space in the Topkapl Palace complex, with the discovery of Byzantine reminiscences underground becoming a significant part of the new exhibiton. After being restored between 2008 and 2010, the Outer Treasury was transformed into a new exhibition project, aiming at the integration of contemporary strategies of exhibition design and technology. Its purpose was not simply to highlight the glory of the Ottoman history, but to engage visitors in a complete sensory experience by making full use of the esthetics of the work of art on display of the Ottoman legacy. Topkapi Palace's architecture, archeology and selected collection of arms and armours are being exhibited by means of contemporary media instruments, such as film, music, graphics and costume arts. 展开更多
关键词 Topkapl patace OTTOMAN BYZANTINE Arms and armours RESTORATION EXHIBITION
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