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公开(公告)号：WO2008137969A1
公开(公告)日：2008-11-13
申请号：PCT/US2008/062974
申请日：2008-05-08
IPC分类号： C06B45/00
摘要： A shaped, flexible fuel and energetic system is presented. The shaped, flexible fuel comprises at least one polymeric binding material and porous silicon particles dispersed throughout the polymeric binding material. The porous silicon particles are prepared from a metallurgical grade silicon powder. The shaped, flexible fuel preferably includes shapes such as: an article, a film, a wire and a tape. The energetic system comprises the shaped, flexible fuel portion used alone or in combination with at least one oxidizer.
摘要翻译： 提出了一种形状灵活的燃料和能量系统。 成形的柔性燃料包括分散在整个聚合物粘合材料中的至少一种聚合物粘结材料和多孔硅颗粒。 多孔硅颗粒由冶金级硅粉制备。 成形的柔性燃料优选地包括诸如物品，膜，线和带的形状。 能量系统包括单独使用或与至少一种氧化剂组合使用的成形的柔性燃料部分。
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公开(公告)号：WO2007062046A2
公开(公告)日：2007-05-31
申请号：PCT/US2006/045074
申请日：2006-11-21
IPC分类号： C01B33/00
CPC分类号： C01B21/068 , C01B21/0682 , C01B21/0685
摘要： A process for producing a silicon nitride compound is presented. A starting solution comprising fluorosilicic acid is provided. The starting solution is derived from a silicon etching process wherein silicon is etched with a solution comprising hydrofluoric acid and where silicon powder has been removed. The starting solution is heated to yield a vapor solution comprising silicon tetrafluoride, hydrogen fluoride, and water. The hydrogen fluoride is separated from the vapor solution wherein a pure stream of silicon tetrafluoride and water vapor remain. The silicon tetrafluoride and water vapor are hydrolyzed to yield a concentrated flluorosilicic acid solution. The fluorosilicic acid is reacted with a base to yield a fluorosilicic salt. The fluorosilicic salt is heated to yield anhydrous silicon tetrafluoride. The anhydrous silicon tetrafluoride is reacted with a metal hydride to yield a monsilane. The monosilane is reacted to form a silicon compound and a silicon nitride compound. The silicon and the silicon nitride compounds are recovered. In an alternate embodiment, the hydrogen fluoride is recovered from the reaction process and reintroduced into the porous silicon etching process.
摘要翻译： 提出了一种生产氮化硅化合物的方法。 提供了包含氟硅酸的起始溶液。 起始溶液来自硅蚀刻工艺，其中用包含氢氟酸的溶液蚀刻硅，并且其中硅粉已被除去。 将起始溶液加热以产生包含四氟化硅，氟化氢和水的蒸气溶液。 从蒸气溶液中分离出氟化氢，其中残留了纯四氟化硅和水蒸气。 将四氟化硅和水蒸气水解，得到浓缩的氟硅酸溶液。 氟硅酸与碱反应，得到氟硅酸盐。 将氟硅盐加热，得到无水四氟化硅。 将无水四氟化硅与金属氢化物反应，得到一甲硅烷。 甲硅烷反应形成硅化合物和氮化硅化合物。 回收硅和氮化硅化合物。 在另一个实施方案中，从反应过程中回收氟化氢并重新引入到多孔硅蚀刻工艺中。
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公开(公告)号：WO2006121870A2
公开(公告)日：2006-11-16
申请号：PCT/US2006/017429
申请日：2006-05-05
IPC分类号： C01B33/00
CPC分类号： C01B33/02 , Y10T428/2982
摘要： Silicon nanosponge particles prepared from a metallurgical grade silicon powder having an initial particle size ranging from about 1 micron to about 4 microns is presented. Each silicon nanosponge particle has a structure comprising a plurality of nanocrystals with pores disposed between the nanocrystals and throughout the entire nanosponge particle.
摘要翻译： 提出了由具有约1微米至约4微米的初始粒度的冶金级硅粉制备的硅纳米海绵颗粒。 每个硅纳米海绵颗粒具有包括多个纳米晶体的结构，其具有设置在纳米晶体和整个纳米海绵颗粒之间的孔。
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公开(公告)号：WO2007037787A1
公开(公告)日：2007-04-05
申请号：PCT/US2006/017435
申请日：2006-05-05
IPC分类号： C01B33/02
CPC分类号： C01B33/02 , Y10T428/2982
摘要： Porous silicon particles are prepared from a metallurgical grade silicon powder having an initial particle size greater than about 1 micron is presented. Each porous silicon particle comprises a solid core surrounded by a porous silicon layer having a thickness greater than about 0.5 microns.
摘要翻译： 多孔硅颗粒由具有大于约1微米的初始粒度的冶金级硅粉制备。 每个多孔硅颗粒包括由厚度大于约0.5微米的多孔硅层包围的固体核。
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