[EN] PROCESS FOR THE PRODUCTION OF SILANE PRODUCTS FROM CALCIUM SILICIDE<br/>[FR] PROCÉDÉ DE PRODUCTION DE PRODUITS SILANES À PARTIR DE SILICIURE DE CALCIUM
申请人:DOW CORNING
公开号:WO2014172034A1
公开(公告)日:2014-10-23
A process for preparing a reaction product including a silane product includes step (i), (ii), and (iii). Step (i) is contacting an organohalide with a calcium silicide at a temperature from 300 °C to 700 °C to form the reaction product including a spent reactant and the silane product. The silane product has formula RmHnSiX(4-m-n), where each R is independently a monovalent organic group, each X is independently a halogen atom; subscript m is 0 to 4; subscript n is 0 to 2; and a quantity (m + n) is 0 to 4. Step (ii) is contacting, at a temperature from 200 °C to 1400 °C, the spent reactant with a silane of formula HaRbSiX(4-a-b), where subscript a is 0 to 4, subscript b is 0 or 1, a quantity (a + b) ≤ 4. The silane of formula HaRbSiX(4-a-b) is distinct from the silane product of formula RmHnSiX(4-m-n). When the quantity (a + b) < 4, then step (ii) further includes contacting the spent reactant with H2; thereby forming a reactant. Step (iii) is contacting the reactant formed in step (ii) with an additional organohalide at a temperature from 300 °C to 700 °C to form an additional silane product of formula RmHnSiX(4-m-n). Steps (ii) and (iii) are performed separately and consecutively after step (i).
一种制备包括硅烷产物的反应产物的过程包括步骤(i)、(ii)和(iii)。步骤(i)是将有机卤化物与硅化钙在300°C至700°C的温度下接触,形成包括已用反应物和硅烷产物的反应产物。硅烷产物的化学式为RmHnSiX(4-m-n),其中每个R都是独立的一价有机基团,每个X都是独立的卤素原子;下标m为0至4;下标n为0至2;数量(m + n)为0至4。步骤(ii)是在200°C至1400°C的温度下,将已用反应物与化学式为HaRbSiX(4-a-b)的硅烷接触,其中下标a为0至4,下标b为0或1,数量(a + b)≤4。化学式为HaRbSiX(4-a-b)的硅烷与化学式为RmHnSiX(4-m-n)的硅烷产物不同。当数量(a + b) < 4时,步骤(ii)进一步包括将已用反应物与H2接触;从而形成一个反应物。步骤(iii)是将在步骤(ii)中形成的反应物与额外的有机卤化物在300°C至700°C的温度下接触,形成化学式为RmHnSiX(4-m-n)的额外硅烷产物。步骤(ii)和(iii)在步骤(i)之后分别连续进行。