sodium silicate | 15915-98-7

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 碱金属含氧阴离子化合物
• 英文名称: sodium silicate
• 英文别名: sodium metasilicate；SMS；Silicic acid (H2SiO3), sodium salt；sodium;dioxido(oxo)silane
• CAS: 15915-98-7；15457-97-3
• 化学式: 2Na*O₃Si
• 分子量: 122.063
• InChiKey: PVRGLAMGMYQDTQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -5.87
• 重原子数：
  5
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  63.2
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  sodium silicate 在 sodium hydroxide 、 十六烷基三甲基溴化铵 作用下， 以 水 为溶剂， 反应 16.0h， 生成 silica gel
  参考文献：
  名称：

  Photocatalytic degradation of benzothiophene by a novel photocatalyst, removal of decomposition fragments by MCM-41 sorbent

  摘要：

  在本研究中，通过将ZnO引入到FSM-16催化剂载体（ZnO/FSM-16）的表面来合成催化剂。 ZnO 对催化剂载体的浸渍是通过 FSM-16 纳米颗粒与 Zn(CH3COO)2 溶液反应，然后煅烧产物来进行的。然后通过不同的方法对合成的光催化剂进行了鉴定，并通过DRS方法研究了光催化剂的光学性质。结果表明，在FSM-16载体上沉积光催化剂后，光催化剂带隙移动到可见光区域。光致发光研究表明，固定在 FSM-16 上后，光催化剂的电子-空穴重组率较低。研究了不同变量对样品光催化性能的影响。在优化条件下，ZnO/FSM-16的降解效率高达97%。 GC-MS方法识别了苯并噻吩降解产生的化合物，并且MCM-41吸附剂对含硫产物进行了适当的吸附。该光催化剂表现出较高的再生能力，6次再生循环后其活性基本保持不变。

  DOI：

  10.1007/s11164-019-03744-0
• 作为产物：
  描述：

  sodium silicate pentahydrate 生成 sodium silicate
  参考文献：
  名称：

  INORGANIC SOLID SILICON-BASED SULFONIC ACID AND/OR PHOSPHORIC ACID CATALYST, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF

  摘要：

  A preparation method and use of a novel pure inorganic solid silicon-based sulfonic acid and/or phosphoric acid catalytic material are disclosed. The surface hydroxyl-rich metasilicic acid is used as the raw material, and by using a sulfonating reagent and/or phosphoric acid, the sulfonic acid group and/or the phosphoric acid group are bonded to the inorganic silicon material by chemical bonding to obtain a pure inorganic solid silicon-based sulfonic acid and/or phosphoric acid catalytic material. The catalytic material can be widely used in many acid-catalyzed organic reactions such as isomerization, esterification, alkylation, hydroamination of olefins, condensation, nitration, etherification, multi-component reactions and oxidation reactions. The inorganic solid silicon-based sulfonic acid and/or phosphoric acid catalytic material of the present invention has the advantages of high acid amount, high activity, good hydrothermal stability, no swelling, simple preparation, low cost, no pollution, no corrosion, easy separation and reusability.

  公开号：

  US20230104925A1
• 作为试剂：
  描述：

  聚合甲醛 、 丁酮 在 sodium silicate 作用下， 生成 2-甲基-1-丁烯-3-酮
  参考文献：
  名称：

  DE734278

  摘要：

  公开号：

文献信息

• Sonochemical Synthesis of Silica and Silica Sulfuric Acid Nanoparticles from Rice Husk Ash: A New and Recyclable Catalyst for the Acetylation of Alcohols and Phenols Under Heterogeneous Conditions
  作者：Masoud Salavati-Niasari、Jaber Javidi

  DOI：10.2174/138620712803519743

  日期：2012.10.1

  Silica nanoparticles were synthesized from rice husk ash at room temperature by sonochemical method. The feeding rate of percipiteting agent and time of sonication were investigated. The nanostructure of the synthesized powder was realized by the FE-SEM photomicrograph, FT-IR spectroscopy, XRD and XRF analyses. These analytical observations have revealed that the nano-sized amorphous silica particles are formed and they are spheroidal in shape. The average particle size of the silica powders is found to be around 50 nm. The as-synthesized silica nanoparticles were subsequently modified with chlorosulfonic acid and prepared silica sulfuric acid nanoparticles, which were employed as an efficient catalyst for the acylation of alcohols and phenols with acetic anhydride in excellent yields under solvent-free conditions at room temperature. This reported method is simple, mild, and environmentally viable and catalyst can be simply recovered and reused over 9 times without any significant loss of its catalytic activity.

  通过声化学方法，在室温下利用稻壳灰合成了硅纳米颗粒，并研究了沉淀剂的投料速率和超声处理时间。通过FE-SEM显微照片、FT-IR光谱、XRD和XRF分析，实现了合成粉末的纳米结构。这些分析观察揭示了形成了纳米尺寸的非晶硅颗粒，且它们呈球形。硅粉的平均粒径约为50纳米。随后，合成的硅纳米颗粒被氯磺酸修饰，制备了硅硫酸纳米颗粒，这些纳米颗粒被用作在室温下无溶剂条件下，以醋酐为酰化剂对醇和酚进行酰化反应的高效催化剂，产率优异。该报告的方法简单、温和且环境友好，催化剂可以简单地回收并重复使用超过9次，而不会显著损失其催化活性。
• Increased in vitro Anti‐HIV Activity of Caffeinium‐Functionalized Polyoxometalates
  作者：Ana G. Enderle、Matteo Bosso、Rüdiger Groß、Magdalena Heiland、Mariela Bollini、María J. Culzoni、Frank Kirchhoff、Jan Münch、Carsten Streb

  DOI：10.1002/cmdc.202100281

  日期：2021.9.6

  Polyoxometalates (POMs), molecular metal oxide anions, are inorganic clusters with promising antiviral activity. Herein we report increased anti-HIV-1 activity of a POM when electrostatically combined with organic counter-cations. To this end, Keggin-type cerium tungstate POMs have been combined with organic methyl-caffeinium (Caf) cations, and their cytotoxicity, antiviral activity and mode of action

  多金属氧酸盐（POM）是分子金属氧化物阴离子，是一种具有良好抗病毒活性的无机簇。在此，我们报告了当与有机抗衡阳离子静电结合时，POM 的抗 HIV-1 活性增加。为此，将Keggin型钨酸铈POM与有机甲基咖啡因（Caf）阳离子结合，研究了它们的细胞毒性、抗病毒活性和作用方式。这种新型化合物 Caf 4 K[β 2 -CeSiW 11 O 39 ]×H 2 O 表现出亚纳摩尔级抗病毒活性，并通过作用于病毒感染周期的早期步骤来抑制 HIV-1 感染。这项工作表明，POM 阴离子和有机生物活性阳离子的组合可以成为增强这些无机化合物的抗病毒活性的强大新策略。
• Process for oxidation of steroidal compounds having allylic groups
  申请人：Merck & Co., Inc.

  公开号：US06369247B1

  公开（公告）日：2002-04-09

  The instant invention involves a process for oxidizing compounds containing an allylic group, i.e. those containing an allylic hydrogen or allylic alcohol group, to the corresponding enones, using a ruthenium-based catalyst in the presence of a hydroperoxide. Particularly, &Dgr;-5-steroidal alkenes can be oxidized to the corresponding &Dgr;-5-7-keto alkenes.

  这项即时发明涉及一种氧化含有烯丙基团的化合物的过程，即那些含有烯丙基氢或烯丙醇基团的化合物，使用基于钌的催化剂在过氧化氢的存在下将其氧化为相应的烯酮。特别地，Δ-5类固醇烯烃可以被氧化为相应的Δ-5-7酮烯烃。
• Preparing Bi₁₂SiO₂₀ crystals at low temperature through nontopotactic solid-state transformation and improving its photocatalytic activity by etching
  作者：Qiaofeng Han、Juan Zhang、Xin Wang、Junwu Zhu

  DOI：10.1039/c5ta00628g

  日期：——

  The egg-tart shaped BiOCl hierarchitectures with efficient visible-light photocatalytic activity were prepared through etching of Bi₁₂SiO₂₀ obtained at low temperature.

  通过在低温下对Bi₁₂SiO₂₀进行蚀刻制备出具有高效可见光光催化活性的蛋挞形状的BiOCl分级结构。
• Unagglomerated core/shell nanocomposite particles
  申请人：Adair H. James

  公开号：US20050281884A1

  公开（公告）日：2005-12-22

  The present invention provides a method for the synthesis of unagglomerated, highly dispersed, stable core/shell nanocomposite particles comprised of preparing a reverse micelle microemulsion that contains nanocomposite particles, treating the microemulsion with a silane coupling agent, breaking the microemulsion to form a suspension of the nanocomposite particles by adding an acid/alcohol solution to the microemulsion that maintains the suspension of nanocomposite particles at a pH of between about 6 and 7, and simultaneously washing and dispersing the suspension of nanocomposite particles, preferably with a size exclusion HPLC system modified to ensure unagglomeration of the nanocomposite particles. The primary particle size of the nanocomposite particles can range in diameter from between about 1 to 100 nm, preferably from between about 10 to 50 nm, more preferably about 10 to 20 nm, and most preferably about 20 nm.

  本发明提供了一种合成未聚集、高度分散、稳定的核/壳纳米复合颗粒的方法，包括制备含有纳米复合颗粒的逆胶囊微乳液，用硅烷偶联剂处理微乳液，通过向微乳液中添加酸/醇溶液来破坏微乳液以形成纳米复合颗粒的悬浮液，该酸/醇溶液将保持纳米复合颗粒的悬浮液在约6至7的pH值之间，并同时清洗和分散纳米复合颗粒的悬浮液，最好使用改进的尺寸排除HPLC系统来确保纳米复合颗粒不聚集。纳米复合颗粒的初级粒子尺寸可以在直径约1至100纳米之间，最好在约10至50纳米之间，更好地约为10至20纳米，最好约为20纳米。