首页> 外国专利> silica gel / metal composition of group i, methods for preparing it, and for producing hydrogen gas, birch reduction of an aromatic compound in the presence of an alkali metal, dehalogenation reaction and wurtz reaction of a halogenated organic compound. presence of alkali metal, and desulphurization reaction of an organic compound containing a sulfide bond in the presence of alkali metal

silica gel / metal composition of group i, methods for preparing it, and for producing hydrogen gas, birch reduction of an aromatic compound in the presence of an alkali metal, dehalogenation reaction and wurtz reaction of a halogenated organic compound. presence of alkali metal, and desulphurization reaction of an organic compound containing a sulfide bond in the presence of alkali metal

机译：第i组硅胶/金属组合物，其制备方法和生产氢气，在碱金属存在下桦木还原芳族化合物，卤代有机化合物的脱卤反应和Wurtz反应。碱金属的存在，以及在碱金属存在下含硫键的有机化合物的脱硫反应

页面导航

摘要
著录项
相似文献

摘要

"GROUP I SILICA / METAL GEL COMPOSITION, METHODS TO PREPARE THE SAME, AND TO PRODUCE HYDROGEN GAS, BIRCH REDUCTION OF AN AROMATIC COMPOUND, IN THE PRESENCE OF AN ALKALINE METHOD WITHOUT HYDROGENAL DEALOG IN THE PRESENCE OF ALKALINE METAL AND THE DEULFURIZATION REACTION OF AN ORGANIC COMPOUND CONTAINING A SULPHIDE CONNECTION IN THE PRESENCE OF ALKALINE METAL ". The invention relates to Group I / silica metal compositions comprising silica gel and an alkali metal or an alkali metal alloy. The compositions of the invention are described as stage 0, I, II and III materials. These materials differ in their preparation and chemical reactivity. Each successive stage can be prepared directly using the methods described below or from an earlier stage material. The O-stage materials may, for example, be prepared using Na and K liquid alloys which are rapidly absorbed by silica gel (porous SiO2) under isothermal conditions, preferably at or just above room temperature, to form loose black powders which may be present. retains most of the ability to reduce parental metals. When low melting Group I metals are absorbed into the silica gel, a mild exothermic reaction produces stage I material, loose black powders that are indefinitely stable in dry air. Subsequent heating to 400 198 C produces stage II materials, which are also loose black powders. Other heating above 400 198 C were Stage III material with release of some Group I metal. Stage I, II and III materials are believed to represent silica gel reductions after Group I metal absorption. Group I silica gel / metal compositions of the invention are those containing sodium, potassium or sodium potassium alloys with sodium and sodium potassium alloys being most preferred. Each stage of the Giupo I silica / metal gel composition of the invention may be used as a reducing agent by reacting with a number of reducible organic materials in the same manner known for alkali metals and their alloys.

机译：“由二氧化硅/金属凝胶组成的组合物，制备相同的方法和生产氢气的方法，无碱化合物的存在的情况下，在没有碱金属存在的情况下采用碱加氢脱硫和碱解的碱性方法在碱性金属存在下含有硫化物连接的有机化合物。本发明涉及包含硅胶和碱金属或碱金属合金的I族/二氧化硅金属组合物。本发明的组合物被描述为阶段0，I，II和III的材料。这些材料的制备和化学反应性不同。每个连续的阶段都可以直接使用下面介绍的方法或从较早阶段的材料中制备。例如，可以使用Na和K液态合金制备O型材料，这些液态合金在等温条件下（最好在室温或略高于室温）被硅胶（多孔SiO2）快速吸收，形成松散的黑色粉末，该粉末可能存在。保留了减少母体金属的大部分功能。当低熔点的I类金属吸收到硅胶中时，温和的放热反应产生I类物质，即松散的黑色粉末，在干燥的空气中无限稳定。随后加热至400 <198>会产生阶段II的物料，该物料也是疏松的黑色粉末。高于400 198 C的其他加热是阶段III材料，其中释放了某些I类金属。据信阶段I，II和III的材料代表第I组金属吸收后硅胶的还原。本发明的第I族硅胶/金属组合物是含有钠，钾或钠钾合金的那些，最优选钠和钠钾合金。通过与碱金属及其合金已知的相同方式，通过与多种可还原的有机材料反应，本发明的Giupu I二氧化硅/金属凝胶组合物的各个阶段可用作还原剂。

著录项

公开/公告号BRPI0416835A

专利类型
公开/公告日2007-04-10

原文格式PDF
申请/专利权人 MICHAEL LEFENFELD;JAMES L. DYE;
展开▼

申请/专利号BR2004PI16835
发明设计人 MICHAEL LEFENFELD;JAMES L. DYE;
展开▼

申请日2004-11-24
分类号C04B35/14;B01J21/08;B01J21/12;B01J21/14;B01J23/04;C01B3/02;C01B3/08;C01B6/24;C01B33/12;C01B33/32;C04B35/16;C07C5;C07C17/25;C07F1/02;
国家 BR
入库时间 2022-08-21 20:59:29

相似文献

专利
外文文献
中文文献