摘要:
A scavenger for purifying inert gas mixtures to remove Lewis acid and oxidant impurities therefrom, comprising (i) an inert inorganic support, and (ii) an active scavenging species on the support, formed by deposition thereon of an organometallic precursor and pyrolysis thereof at a selected elevated temperature. The organometallic precursor is an alkyl metal compound comprising a metal of Group IA, IIA, and/or IIIA, wherein the pyrolysis temperature may range from about 150.degree. C. to about 250.degree. C., depending on the specific alkyl metal compound employed as the precursor. Also disclosed are: a corresponding method of making the scavenger; a process for purifying inert gases by contacting same with the scavenger; and a vessel containing a bed of the scavenger, useful as an apparatus for purifying inert gases.
摘要:
A scavenger, having utility for purifying a mixture comprising:(i) a primary component selected from one or more members of the group consisting of hydrogen selenide and hydrogen telluride, and(ii) impurities selected from one or more members of the group consisting of moisture and oxidants, comprising:(a) a support; and(b) associated with said support, one or more members of the group consisting of:(I) precusor compounds of the formula R.sub.3-x AlH.sub.x, wherein x is 0 or 1, and R is a hydrocarbon radical containing from 1 to 12 carbon atoms; and(II) aluminum chalconides of the formula Al.sub.2 M.sub.3, wherein M is selenium or tellurium.Illustrative supports useful in such scavenger include aluminosilicates, alumina, silica, carbon, and macroreticulate polymers. A process and apparatus are disclosed for purifying hyhrogen selenide and/or hydrogen telluride, to remove moisture and/or oxidant impurities therefrom, in which a bed of the scavenger is employed.
摘要翻译:一种清除剂,其用于纯化混合物,其包含:(i)选自硒化氢和碲化氢中的一种或多种成员的主要成分,和(ii)选自以下的一种或多种成员的杂质: 水分和氧化剂,包括:(a)载体; 和(b)与所述载体相关联,所述组中的一个或多个成员包括:(I)式R3-xAlHx的前体化合物,其中x为0或1,R为含有1至12个碳的烃基 原子 和(II)式Al 2 M 3的铝金卤素,其中M是硒或碲。 在这种清除剂中有用的说明性的载体包括硅铝酸盐,氧化铝,二氧化硅,碳和大理石聚合物。 公开了一种用于净化硒化氢和/或碲化氢的方法和装置,以除去其中使用清除剂床的水分和/或氧化剂杂质。
摘要:
A valve block leak-tightly joinable to a receptacle to form a container suitable for liquid storage/vapor dispensing, and gas purification applications. The valve block is provided with first and second valve ports with which valves may be employed to flow feed gas through the valve block and receptacle. To effect purging the valve block ports and gas flow passages, the valve block is provided with a purge valve port which may be opened while the first and second valve ports are closed, to remove dead space hold-up gas from the respective ports and flow passages of the block prior to initiation of vapor dispensing or gas purification operation. The disclosed container is particularly advantageous for dispensing or purifying source reagent compounds for elements of Group III and Group V, in semiconductor manufacturing applications.
摘要:
Lewis acid and oxidant impurities are removed from inert fluids by contacting with a high capacity macroreticulate polymer comprising a macroreticulate polymer backbone having a plurality of pendant functional groups or mixtures of functional groups having the general formula: ##STR1## where Ar is an aromatic hydrocarbon radical containing from one to three rings; R.sub.1 and R.sub.2 are the same or different and are selected from the group consisting of hydrogen, alkyl hydrocarbon radicals, methylene-bridged benzophenone radicals, salts of methylene-bridged benzophenone, methylene-bridged fluorenone radicals and salts of methylene-bridged fluorenone; and M is selected from the group consisting of lithium, potassium, sodium, alkyl magnesium, and alkyl zinc.
摘要:
Lewis acid and oxidant impurities are removed from inert fluids by contacting with a high capacity macroreticulate polymer comprising a macroreticulate polymer backbone having a plurality of pendant functional groups or mixtures of functional groups having the general formula: ##STR1## where Ar is an aromatic hydrocarbon radical containing from one to three rings; R.sub.1 and R.sub.2 are the same or different and are selected from the group consisting of hydrogen, alkyl hydrocarbon radicals, methylene-bridged benzophenone radicals, salts of methylene-bridged benzophenone, methylene-bridged fluorenone radicals and salts of methylene-bridged fluorenone; and M is selected from the group consisting of lithium, potassium, sodium, alkyl magnesium, and alkyl zinc.