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PACMANUS热液区Si-Fe-Mn氧化物的显微结构特征及其形成机制

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矿物学报 2015年第S1期35卷 799-800页

作者：杨宝菊曾志刚石学法国家海洋局第一海洋研究所海洋地质与地球物理研究室山东青岛266061 中国科学院海洋研究所海洋地质与环境重点实验室山东青岛266071

热液喷口通常沿着洋中脊和弧后盆地等构造环境的扩张中心分布,是海水下渗过程中形成一种酸性、还原性和富含金属的流体上涌形成。热液流体喷出海底后,形成的氧化还原条件和p H梯度有利于硫化物、氧化物的沉淀和微生物的生长,微生物运用... 详细信息

热液喷口通常沿着洋中脊和弧后盆地等构造环境的扩张中心分布,是海水下渗过程中形成一种酸性、还原性和富含金属的流体上涌形成。热液流体喷出海底后,形成的氧化还原条件和p H梯度有利于硫化物、氧化物的沉淀和微生物的生长,微生物运用氧化还原梯度获取新陈代谢所需的能量(Jannasch,1995)。还原性的Fe2+离子是热液流体中喷出的一种常见的金属离子,这种离子通过热液与周围氧化性海水接触后被氧化成Fe3+。

关键词：热液流体显微结构特征 PACMANUS Si-Fe-Mn 沉淀作用原性氧化还原条件扩张中心羟化物构造环境

New technology for comprehensive utilization of aluminum-chromium residue from chromium salts production

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中国有色金属学会会刊：英文版 2008年第2期18卷 463-468页

作者：李小斌齐天贵江新民周秋生刘桂华彭志宏韩登仑张忠元杨昆山 School of Metallurgical Science and Engineering Central South University Changsha 410083 China Gansu Jinshi Chemical Engineering Corporation Ltd. Zhangye 734000 China

Colloidal aluminum-chromium residue(ACR)was mass-produced in chromate production process,and the large energy consumption and high recovery cost existed in traditional methods of utilizing such *** overcome those problems,a new comprehensive method was proposed to deal with the ACR,and was proven valid in *** the new process,the chromate was separated firstly from the colloidal ACR by ripening and washing with additives,by which more than 95%hexavalent chromium was *** chromium-free aluminum residue(CFAR),after properly dispersed,was digested at 120-130℃and more than 90% alumina can be *** then the pregnant aluminate solution obtained from digestion was seeded to precipitate aluminum *** new method can successfully recover both alumina and sodium chromate,and thus realize the comprehensive utilization of ACR from chromate industry.

关键词：铝铬冶金技术合金羟化物

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金龟子绿僵菌对甾族化合物的11α-羟化

上海医科大学学报 1997年第4期24卷 265-269页

作者：史济平叶丽沈国祥陈良康上海医科大学药学院生物合成药化教研室上海计划生育科学研究所 200032

研究筛选金龟子绿缰菌及其的11α-羟化作用与生物氧化条件之间关系和底物分次添加方式影响。生物转化条件如培养基组成、菌龄、接种量等因素。在培养结果时取样作pH、菌丝量和转化率检测。结果：当底物浓度为0．2％转化率为36％。结论... 详细信息

研究筛选金龟子绿缰菌及其的11α-羟化作用与生物氧化条件之间关系和底物分次添加方式影响。生物转化条件如培养基组成、菌龄、接种量等因素。在培养结果时取样作pH、菌丝量和转化率检测。结果：当底物浓度为0．2％转化率为36％。结论：金龟子绿僵菌作为19-去甲基-13-乙基-雄甾-4-烯-3，17-双酮（FA）的11α-羟化是很有效的。

关键词：金龟子绿僵菌羟化物中间体甾族化合物避孕药

Disposal of wastewater containing Congo Red by synthesizing layer double hydroxide in-situ

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Chinese Journal Of Geochemistry 2006年第4期25卷 390-394页

作者：朱荣崔康平彭书传杨远盛陈天虎安志环徐晓春 School of Resources and Environmental Engineering Hefei University of Technology Anhui Institute of Environmental Science

Based on the principle of synthesis, a new method was put forward to dispose Congo Red anion-containing dyestuff from wastewater and its feasibility was also examined. The principle of the method is described as follows: Mg2+ and Al3+ are hydrolyzed to form Mg/Al-LDH by adding Mg2+, Al3+ and NaOH in wastewater containing anion dyestuff, which is selectively intercalated with the interlayer of LDH in order to balance positive structural charge. While Mg2+ and Al3+ are co-precipitated to form LDH, the anion dyestuff in wastewater will be removed by LDH synthesized in-situ, as is confirmed by X-ray diffraction analysis of settlings and chemical analysis of aqueous samples. In this work, we studied the influence of Mg/Al mole ratio, pH value, time and temperature of reaction on the removal of anion dyestuff and the use of Mg and Al. The experimental results showed the maximum removal efficiency of anion dyestuff could be attained when pH value was 9.0, and Mg/Al mol ratio was 2∶1, reaction duration was 2 hours, and the effect of temperature was not remarkable, and the removal efficiency could reach 100%. Meanwhile, the Mg and Al added could be made good use of. This technology has the advantage of extraordinary efficiency of wastewater disposal.

关键词：分层双倍羟化物 LDH X射线衍射废水处理可行性

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我国发现的格羟铬矿的研究

岩矿测试 1983年第1期2卷 44-49,I0004页

作者：王炳熙中国地质科学院地质研究所

在我国发现的铬羟化物——格羟铬矿(qrimal-diite)具羟钴矿(heterogenite,CoOOH)型结构,产于云南省墨江县金厂超基性岩岩体与围岩接触带中。经研究,金厂的格羟铬矿不同于圭亚那发现的格羟铬矿,后者为杂羟铬矿(merumite)——一种复杂的... 详细信息

在我国发现的铬羟化物——格羟铬矿(qrimal-diite)具羟钴矿(heterogenite,CoOOH)型结构,产于云南省墨江县金厂超基性岩岩体与围岩接触带中。经研究,金厂的格羟铬矿不同于圭亚那发现的格羟铬矿,后者为杂羟铬矿(merumite)——一种复杂的多种铬矿物混合物的主要成分之一,而且常与铜铬矿(mcconnellite,CrOOCu)呈交生体出现,而金厂格羟铬矿则为单一的物相。

关键词：铬矿金厂羟化物 CoOOH 超基性岩墨江县圭亚那

Polymerization reaction in restricted space of layered double hydroxides(LDHs)

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Chinese Science Bulletin 2004年第23期49卷 2459-2463页

作者： SILichun CAIFuli WANGZhiqing DUANXue KeyLaboratoryofScienceandTechnologyofControllableChemicalReactions Box98MinistryofEducationBeijingUniversityofChemicalTechnologyBeijing100029China Depanmentofchemistry TsinghuaUniversityBeijing100084China

This paper reported the preparation of styrene sulfonate intercalated layered double hydroxides (LDHs) material, SS-LDHs by coprecipitation method, followed by in-situ polymerisation of the monomers in the interlayer space of LDHs. The polymerisation reaction was monitored by UV and NMR. It is confirmed that when the reaction oc- curred at 100℃ for 24 h, part of monomers did not react. When the reaction was carried out at 150℃, the polymeriza- tion of the intercalated monomers is complete to afford the polymer intercalated product PSS-LDHs. During the polym- erization process, the layered structure remains well. At the same time the gallery height increases with the lengthening of reaction time. This is preliminarily because that the PSS becomes more swelling with the amount of water it absorbs due to its hygroscopicity property.

关键词：聚合反应羟化物 LDHs 共沉淀方法钠苯乙烯磺酸盐

引入纳米技术提高钻井的井壁破裂压力降低作业成本

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石油钻采工艺 2016年第2期38卷 255-255页

作者：郭永峰

钻井过程的井壁破裂压力直接影响地层压力窗口幅度。通常较少考虑改进钻井液性能来提高井壁破裂压力、简化井身结构,降低钻井成本。加拿大能源服务公司（Canada Energy Service）在美国西德克萨斯（West Texas）首次使用MMH（第3代混合... 详细信息

钻井过程的井壁破裂压力直接影响地层压力窗口幅度。通常较少考虑改进钻井液性能来提高井壁破裂压力、简化井身结构,降低钻井成本。加拿大能源服务公司（Canada Energy Service）在美国西德克萨斯（West Texas）首次使用MMH（第3代混合金属羟化物）的纳米添加剂,加固井壁,提高钻井过程破裂压力,取得理想效果。其原理为在钻井过程中,

关键词：井壁破裂纳米技术能源服务公司混合金属压力降低井身结构羟化物地层压力 Canada 破裂压力

Effect of preparation conditions on the electrochemical properties of spherical Ni(OH)_2

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广东有色金属学报 2005年第2期15卷 424-430页

作者：安晓君焦红忠何季麟 Northwest Rare Metal Materials Institute Dawukou 753000 China

Spherical nickel hydroxide is used as the active material of the positive electrode in alkaline recharged batteries,it determines the most important properties of the battery. Spherical nickel hydroxide made in China meets less than half of total demand of the Chinese batteries industry. Most of the spherical nickel hydroxide used for high performance MH/Ni batteries is imported because the Chinese one cannot reach the requirements of "fine crystal grain, high density and high-activity". In this thesis, the spherical nickel hydroxide with fine crystal grain high-density and high-activity was prepared with complexation-precipitation method. The effects of the preparation conditions on the electrochemical activity of the products were investigated by means of orthogonal test, comprehensive range analysis on all the used factors. And theirs levels showed that the optimum process parameters of preparation the fine crystal grain high-density and high- activity spherical nickel hydroxide is specified as reaction temperature 60℃, pH value 11.0, stronger stirring intensity, the mole ratio of ammonia and nickel 0.3,desiccation temperature 100℃. Furthermore, the relative influence degree of those technology factors is stirring intensity>pH value>reaction temperature>desiccation temperature>mole ratio of ammonia and nickel. The spherical nickel hydroxide made at those optimum process parameters is characterized as with high bulk density(1.78 g/cm^3), larger specific surface(11.9 m^2/g), higher discharged specific capacity (281 mAh/g), and fine crystal grain (15.8 nm). The full width of half maximum intensity(FWHM) of XRD patterns of samples in (101) lines can reach as high as 0.983°. All of these merits make it completely meet the requirements of spherical nickel hydroxide used for high performance MH/Ni batteries.

关键词：电化学球形结构镍羟化物粉末冶金

Synthesis of tetramethyl ammonium hydroxide by cell diaphragm electrolytic method

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广东有色金属学报 2005年第2期15卷 566-571页

作者：李杏英顾珩欧阳全胜 Guangzhou Research Institute of Nonferrous Metals Guangzhou 510651 China

Under the conditions of tetramethyl ammonia chloride (TMAC) used as starting material, Ti-based Dimensionally Stable Anode (DSA), stainless steel used as cathode and Nafion 900 cation membrane as cell diaphragm, this paper studies the synthesis of tetramethyl ammonium hydroxide (TMAH) by cell diaphragm electrolytic method, examining not only the effects of current density, concentration of starting material and cell temperature, on the product purity and current efficiency, but also the effects of electrolyte circulation rate on the service life of Ti-based DSA. The experiment puts forward an optimum processing condition, and experimental findings show that preparing TMAH by using this technique can obtain a current efficiency 74.7% and get product with a purity greater than 99.9%.

关键词：四甲基铵羟化物电解工艺合成方法