Tertiary amine was synthesized from fatty amine and formaldehyde. And then the synthesized tertiary amine was used to react with benzyl chloride to synthesize hexadecyl dimethyl benzyl ammonium chloride (1627) at ambi...Tertiary amine was synthesized from fatty amine and formaldehyde. And then the synthesized tertiary amine was used to react with benzyl chloride to synthesize hexadecyl dimethyl benzyl ammonium chloride (1627) at ambient pressure. Using the synthesized 1627 as collector,the flotation properties of diaspore and kaolinite were investigated by single mineral and mixed mineral test. The flotation mechanism of diaspore,kaolinite and 1627 was discussed based on FTIR spectra. The results show that the mass ratio of aluminum to silicate achieves 15.02 and the recovery of alumina in concentrate is 43.07% using 1627 as a collector. The 1627 is found to be a more effective and a promising collector for reverse flotation to remove aluminum-silicate minerals from bauxite.展开更多
Novel hexadecyl 3-{4-[2-hydroxy-3(isopropylamino)propoxy]phenyl}propionate(HPP)was synthesized and its effect on delivery of liposomes into cultured cardiomyocytes was examined.The structure of HPP was characterized b...Novel hexadecyl 3-{4-[2-hydroxy-3(isopropylamino)propoxy]phenyl}propionate(HPP)was synthesized and its effect on delivery of liposomes into cultured cardiomyocytes was examined.The structure of HPP was characterized by IH NMR,1R and MS.The amount of cardiomyocytes uptake of HPP-liposome was 3.9-fold higher than plain-liposome,and the increase was 6.2-fold when hypoxia happens.It indicated that HPP was a potential ligand for liposome targeting to ischemic myocardium.展开更多
Thin films of poly（3-hexadecyl pyrrole） （P3HDP） nanoparticles have been fabricated by using Langmuir-Blodgett film deposition technique. The structures and morphology of the films were studied by using infrared sp...Thin films of poly（3-hexadecyl pyrrole） （P3HDP） nanoparticles have been fabricated by using Langmuir-Blodgett film deposition technique. The structures and morphology of the films were studied by using infrared spectroscopy, scanning and transmission microscopes. The experimental results demonstrated that the nanoparticles were formed by self-assembling P3HDP at air-water surface. The water contact angles of these films with different deposition layers were measured to be as high as 110°.展开更多
在磷酸二氢钾-硼酸缓冲溶液介质中,铬(Ⅵ)对过氧化氢氧化罗丹明B褪色反应有催化作用,同时加入溴化十六烷基三甲胺(CTMAB)作增敏剂,通过研究影响催化褪色反应速度的各种条件(如:缓冲溶液的p H值范围及用量、加热温度及时间、过氧化氢的...在磷酸二氢钾-硼酸缓冲溶液介质中,铬(Ⅵ)对过氧化氢氧化罗丹明B褪色反应有催化作用,同时加入溴化十六烷基三甲胺(CTMAB)作增敏剂,通过研究影响催化褪色反应速度的各种条件(如:缓冲溶液的p H值范围及用量、加热温度及时间、过氧化氢的用量、罗丹明B的用量及溴化十六烷基三甲胺),来确定最佳条件,从而据此建立了测定水中痕量铬的方法,该方法的检出限为0.144 4μg/25 m L,测定范围0.05~0.1μg/25 m L,应用于不同水样中总铬含量的测定,测得的回收率符合要求在95%~103%之间。展开更多
基金Project(2006AA06Z120) supported by the National High-Tech Research and Development Program of ChinaProject(2005CB623701) supported by the Major State Basic Research Development Program of China
文摘Tertiary amine was synthesized from fatty amine and formaldehyde. And then the synthesized tertiary amine was used to react with benzyl chloride to synthesize hexadecyl dimethyl benzyl ammonium chloride (1627) at ambient pressure. Using the synthesized 1627 as collector,the flotation properties of diaspore and kaolinite were investigated by single mineral and mixed mineral test. The flotation mechanism of diaspore,kaolinite and 1627 was discussed based on FTIR spectra. The results show that the mass ratio of aluminum to silicate achieves 15.02 and the recovery of alumina in concentrate is 43.07% using 1627 as a collector. The 1627 is found to be a more effective and a promising collector for reverse flotation to remove aluminum-silicate minerals from bauxite.
基金This project was supported by the National Natural Science Foundation of China(No.30271548).
文摘Novel hexadecyl 3-{4-[2-hydroxy-3(isopropylamino)propoxy]phenyl}propionate(HPP)was synthesized and its effect on delivery of liposomes into cultured cardiomyocytes was examined.The structure of HPP was characterized by IH NMR,1R and MS.The amount of cardiomyocytes uptake of HPP-liposome was 3.9-fold higher than plain-liposome,and the increase was 6.2-fold when hypoxia happens.It indicated that HPP was a potential ligand for liposome targeting to ischemic myocardium.
基金This work was supported by the National Natural Science Foundation of China (Nos. 50225311, 20374034, 50133010) and 973 Project (No. 2003CB615700).
文摘Thin films of poly（3-hexadecyl pyrrole） （P3HDP） nanoparticles have been fabricated by using Langmuir-Blodgett film deposition technique. The structures and morphology of the films were studied by using infrared spectroscopy, scanning and transmission microscopes. The experimental results demonstrated that the nanoparticles were formed by self-assembling P3HDP at air-water surface. The water contact angles of these films with different deposition layers were measured to be as high as 110°.
文摘在磷酸二氢钾-硼酸缓冲溶液介质中,铬(Ⅵ)对过氧化氢氧化罗丹明B褪色反应有催化作用,同时加入溴化十六烷基三甲胺(CTMAB)作增敏剂,通过研究影响催化褪色反应速度的各种条件(如:缓冲溶液的p H值范围及用量、加热温度及时间、过氧化氢的用量、罗丹明B的用量及溴化十六烷基三甲胺),来确定最佳条件,从而据此建立了测定水中痕量铬的方法,该方法的检出限为0.144 4μg/25 m L,测定范围0.05~0.1μg/25 m L,应用于不同水样中总铬含量的测定,测得的回收率符合要求在95%~103%之间。
