搜索结果: 1-12 共查到“理学 CO3”相关记录12条 . 查询时间(0.046 秒)
用银配合物制备均匀球形AgI纳米粒子,粒径20～100 nm范围内可自由调控.用AgI作为内置核,在尿素存在下,将Y(NO3)3进行升温水解,在预置粒子上包覆Y(OH)CO3形成复合粒子,并符合表面膜机理.结合X射线、电镜照片,考察了Y(NO3)3、尿素、银配合物、内置核的浓度,反应时间,水解温度,表面电荷对反应体系的影响.并加入配合剂Na2S2O3,运用生成稳定配合物的方法溶解内置核,最终得到Y...
Synthesis and thermal analysis of indium-based hydrotalcites of formula Mg6In2(CO3)(OH)16?H2O
Hydrotalcite synthesis Hydrocalumite Raman spectroscopy Indium
2011/11/10
Insight into the unique structure of layered double hydroxides (LDHs) has been obtained using a combination of X-ray diffraction and thermal analysis. Indium containing hydrotalcites of formula Mg4In2...
原位产生的SO42-配位的二维无机钴配合物K2[Co3(OH)2(SO4)3(H2O)2]的水热合成及晶体结构(英文)
配位聚合物 水热原位反应 4-氨基-二(2-吡啶基)-1，2，4-三氮唑
2008/3/20
相同的水热反应条件下4-氨基-二(2-吡啶基)-1，2，4-三氮唑(abpt)、KSCN与钴盐(CoCl2·6H2O)反应合成了2种新的钴配合物:零维的单核配合物[CoSCN(abpt)] (1α)和二维的无机层状配合物K2[Co3(OH)2(SO4)3(H2O)2] (1β)，并通过元素分析和红外光谱对其进行了表征。配合物1α的晶体属于单斜晶系，P21/c空间群。配合物1β晶体属于正交...
摘要 应用原子－键电负性均衡方法融合进分子力场（ABEEM/MM）对Co3+水溶液在室温（298.15K）时进行了细致的分子动力学模拟研究。通过模拟获得了Co3+水溶液的各种性质，例如：静态性质，包括径向分布函数，角度分布函数，ABEEM电荷分布，水分子的结构和平均氢键个数等；动力学性质，包括扩散系数和振动光谱；和溶剂化能等热力学性质。结果表明，ABEEM/MM模型能够较准确地描述Co3+水溶液的...
不对称四核环状Co3^IIM^II簇合物的磁化学
苯酚 P 巯基化合物 磁化强度
2007/12/21
摘要 本文用一种新的方法对三个核环状化合物Co3Fe(mp)4(Hmp)(PBu3^n)3(1) Co4(mp)4(Hmp)(PMe2Ph)3(2)(H2mp=2-巯基苯酚)和Co4(mp)4(PBu3^n)3Cl(MeOH)(3)进行了1。5-300K温度范围的磁性质研究, 即在各向同性海森堡模型的基础上, 用全矩阵对角化方法求自旋态能量本征值, 从而得到化合物的磁化率, 然后用阻尼最小二乘法拟...
Na^+, K^+//Cl^-, SO4^2^-, CO3^2^--H2O五元体系25℃介稳相图的研究
水 密度 碳酸钾 蒸汽压力 电导率 电解质 氯化钠 氯化钾 硫酸钠 硫酸钠 硫酸钾 溶度积 相图 溶液理论 粘度 等温蒸发 渗透系数
2007/12/19
摘要 用等温蒸发方法研究了NaCl饱和下的Na^+, K^+//Cl^-, SO4^2^-, CO3^2^--H2O五元体系25℃介稳相图, 测定了溶液的密度、粘度、折光率、电导率、PH和蒸汽压, 并由蒸汽压数据求得了水活度和渗透系数。在Janecke相图上有五个结晶区, 即Na2SO4,Na2CO3·2Na2SO3, Na2SO4·3K2SO4, Na2CO3·7H2O和KCl相区, 与Harv...
摘要 以Cu(NO3)2·2H2O,Ni(NO3)2·6H2O,Mg(NO3)2·6H2O和Al(NO3)3·9H2O为原料 ，以NaOH和Na2CO3为沉淀剂，采用成核／晶化隔离法合成了Cu-Ni-Mg-Al-CO3四元 水滑石，通过XRD，FT－IR，TG－DTA，ICP等手段对样品进行测试和表征，并且对 水滑石结构的层板和层间阴离子相互作用进行分析和讨论。结果表明，控制Cu^2+ 离子与其它...
Calorimetric studies of the energetics of order-disorder in the system Mg1-xFexCa(CO3)2
Calorimetric studies energetics order-disorder system Mg1-xFexCa(CO3)2
2012/4/1
Calorimetric studies by Chai and Navrotsky (1996) on dolomite-ankerite energetics have beenextended by including two additional types of samples: a very disordered stoichiometric MgCa(CO3 2prepared fr...
The characterization of Na2 CO3 Activated Kütahya Bentonite
Bentonite montmorillonite surface properties CEC drilling muds
2010/6/30
A calcium bentonite from Kütahya region (Turkey) was activated with Na2CO3 at various ratios (1, 2, 2.5, 5, 10, 15g / 100 g bentonite). Due to ion exchange, the original Ca-bentonite was converted to ...
Synthesis, characterization, and energetics of solid solution along the dolomite-ankerite join, and implications for the stability of ordered CaFe(CO3)2
Synthesis characterization energetics dolomite-ankerite join implications CaFe(CO3)2
2012/4/6
Samples along the dolomite-ankerite join weresynthesized using a piston-cylinder ap-paratus and the double-capsule method. Some ofthe ankerite samples maybedisordered. Thermal analysis and X-ray diffr...
Mechanism of the SiO4 for CO3 substitution in defernite, Ca6(CO3)1.58(Si2O7)0.21(OH)7
Mechanism SiO4 CO3 substitution defernite Ca6(CO3)1.58(Si2O7)0.21(OH)7
2012/4/6
Defernite, Ca6(C03)L5s(Si207)o.21(OHMClo.5o(OH)o.os(H20)od, is a carbonate mineral [space group Pnam; at 100K:a= 17.744(2), b=22.601(4), c =3.633(1) A,Z=4]withzeolite-like structural channels. The str...
Decarbonation Behavior of Mg-Al-CO3 Hydrotalcite-like Compounds during Heat Treatment
Decarbonation Heat treatment Hydrotalcite
2011/12/28
Historically, the decarbonation of Mg-Al-CO3 hydrotalcite-like compounds (HTlc) has been thought to occur between 400° and 500°C. The present work demonstrates that when HTlcs having the maximum Al co...