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silica-pillared
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  氧化硅柱
     The results show that these two silica - pillared layered ferrititanates have high thermal stability beyond 650℃, BET specific surface area of 98. 0 m2/g and 163. 8 m2/g, and average pore size of 1. 82 nm and 1. 90 nm, respectively.
     结果表明:所得二个氧化硅柱层状铁钛酸盐均具有较高的热稳定性(>650℃)和比表面(98.0m~2/g和163.8m~2/g),平均孔径为1.82nm和1.90nm.
短句来源
     Preparation of Silica-Pillared Layered Titanate
     氧化硅柱层状钛酸盐的制备
短句来源
     Syntheses and Characterization of Silica - pillared Layered Ferrititanates
     氧化硅柱层状铁钛酸盐的合成和表征
短句来源
     Two silica -pillared layered ferrititanates were synthesized by first preswelling K0.8Fe0.8Ti1.2O4 with n -C6H13NH3Cl, then reacting with NH2(CH2)3Si(OC2H5)3 and finally calcinating the resultant product in air to remove the interlayered organics.
     通过先将K_(0.8)Fe_(0.8)Ti_(1.2)O_4与n-C_6H_(13)NH_3Cl反应得到正己铵离子柱撑的层状铁钛酸盐,然后再与NH_2(CH_2)_3Si(OC_2H_5)_3反应,最后将所得产物在空气中焙烧可得到氧化硅柱层状铁钛酸盐.
短句来源
     Synthesis of a Novel Mesoporous Silica-Pillared Layered Manganese Titanate
     新型中孔氧化硅柱层状锰钛酸的合成
短句来源
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  相似匹配句对
     silica 40;
     白炭黑  40 ;
短句来源
     Silica,10;
     白炭黑,10;
短句来源
     Progress in Preparation of Nano-silica
     纳米二氧化硅的制备工艺及其进展
短句来源
     ALKALI-SILICA DIAGRAM AND ITS APPLICATION
     碱硅图解及其应用
短句来源
     PILLARED INTERLAYERED CLAY CATALYST
     层柱粘土催化剂
短句来源
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  silica-pillared
Silica-pillared clays were prepared by reacting Na-montmorillonite aqueous suspensions with (3-aminopropyl)triethoxysilane (APTEOS).
      
Luminescence of Silica-Pillared Clays and Gels Derived from Aminofunctional Silanes
      
The gallery heights of Ti-, Fe- and Zr-ilerite materials were in the range of 3.55-4.05, 2.55-3.65 and 3.25-3.95 nm, respectively, which are 1-2 nm larger than that of silica-pillared ilerite materials.
      
Silica-pillared clays were prepared by two methods: conventional and microwave irradiated.
      
Washing Effect on the Synthesis of Silica-Pillared Clays
      
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The pillared clays including silica pillared montmorillomte (Si-CLM), silica pillared rectorite (Si-CLR) and alumina pillared rectorite(Al-CLR)were prepared by our new metho-gel dispersion method. The IRframework vibration spectra of 1000-1200 and 400-500cm-1 stem from tetrahedral antisymmetric stretching and Si-O bending vibration modes respectively. Compared with one vibration spectrum of montmorillonite, there are two vibration spectra of rectorite at the corresponding position. After calcination at 450--500℃...

The pillared clays including silica pillared montmorillomte (Si-CLM), silica pillared rectorite (Si-CLR) and alumina pillared rectorite(Al-CLR)were prepared by our new metho-gel dispersion method. The IRframework vibration spectra of 1000-1200 and 400-500cm-1 stem from tetrahedral antisymmetric stretching and Si-O bending vibration modes respectively. Compared with one vibration spectrum of montmorillonite, there are two vibration spectra of rectorite at the corresponding position. After calcination at 450--500℃ for 2 h, some spectra of pillared ciays shift to the higher frequency (CLR: A-47 cm-1; CLM. A = 14 cm-1), but under the same treatment conditions,the tetrahedral antisymmetric stre- tching vibration spectra of clays and pillaring agents remain unchanged, and the spectra of uncalcined pillared clays are similar to those of clays. This shows that after calcination there is a kind of chemical action between pillaring agent and clay. A pillaring mechanism is suggested that after calcination some tetrahedral silicon or aluminium reverse to gallery and react with pillaring agents whether or not there exists tetrahedral aluminium substitution in clays.

云母-蒙脱土的骨架振动光谱不同于蒙脱土,在相应的位置,云母-蒙脱土的振动谱峰都是双蜂。利用凝胶分散法制备的硅交联蒙脱土,硅交联云母-蒙脱土及铝交联云母-蒙脱土,经450~500℃焙烧后,在1000~1200cm~(-1)和400~500cm~(-1)区间内相应于四面体的Si—O反对称伸缩及弯曲振动部分谱峰发生了高波数位移;而交联剂、粘土及未焙烧的层柱分子筛都不发生此现象。这表明只有经过高温焙烧后,交联剂与粘土才发生明显的化学作用,使四面体层结构重排。这对于交联机理的研究提供了依据。

Two organic silicon agents, CH_3Si(OC_2H_5)_3 and NH_2(CH_2)_3Si(OC_2H_5)_3 were intercalated into layered compound of α-Zr(HPO_4)_2·H_2O. The resulting intercalated compounds were calcined at a given temperature to give two types of silica cross-linking α-Zr(HPO_4)_2·H_2O with different space between sheets, respectively. A process of the intercalation and the cross-linking were investigated by means of X-ray diffraction, IR, DTA-TG and analysis of X-ray fluorescence, it was suggested that the process is divided...

Two organic silicon agents, CH_3Si(OC_2H_5)_3 and NH_2(CH_2)_3Si(OC_2H_5)_3 were intercalated into layered compound of α-Zr(HPO_4)_2·H_2O. The resulting intercalated compounds were calcined at a given temperature to give two types of silica cross-linking α-Zr(HPO_4)_2·H_2O with different space between sheets, respectively. A process of the intercalation and the cross-linking were investigated by means of X-ray diffraction, IR, DTA-TG and analysis of X-ray fluorescence, it was suggested that the process is divided into three stages: the organic silicon hydrolyzes partly; hydrolyzcd prcducts with definite state intercalate into the sheets and react with groups on sheets; and the intercalated compounds are calcined into two types of silica pillared α-Zr(HPO_4)_2·H_2O at a given temperature. Finally, it was confirmed by absorbing n-hexane that the pillared compounds are zeolite-like materials with porosity.

用XRD,IR,DTA-TG和X-射线荧光分析方法研究了有机硅试剂CH_3Si(OC_2H_5)_3和NH_2(CH_2)_3Si(OC_2H_5)_3分别嵌入层状α-Zr(HPO_4)_2·H_2O中,在一定温度下灼烧为具有不同层间距的SiO_2交联α_Zr(HPO_4)_2·H_2O。通过吸附正已烷的吸附等温线测定证明SiO_2交联成柱的α-Zr(HPO_4)_2·H_2O是多孔的类沸石材料。

Silica-pillared layered titanate was first prepared by using a new method proposed in this paper. It entails first intercalating H_2Ti_4O_9 with n-hexylamine and then the reaction of the intercalated titanate with APS aqueous solution, and finally calcinating the reaction product in air sequently. The resultant silica-pillared layered titanate has a high surface area of 137.9m2/g (550℃) and good thermal stability above 550℃. The N_2 adsorption-desorption isotherm of this new material demonstrates that...

Silica-pillared layered titanate was first prepared by using a new method proposed in this paper. It entails first intercalating H_2Ti_4O_9 with n-hexylamine and then the reaction of the intercalated titanate with APS aqueous solution, and finally calcinating the reaction product in air sequently. The resultant silica-pillared layered titanate has a high surface area of 137.9m2/g (550℃) and good thermal stability above 550℃. The N_2 adsorption-desorption isotherm of this new material demonstrates that it is porous, with an average pore diameter of 3. 5 nm.

氧化硅柱层状钛酸盐的制备侯文华,颜其洁,傅献彩(南京大学化学系,南京,210008)关键词氧化硅柱,层状钛酸盐,制备层状金属氧化物是一类新型多功能材料[1~3]。我们[4,5]曾成功地用NH2(CH2)3Si·(OC2H5)3(以下简称APS)水溶液...

 
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