| 摘要 |
<p>PURPOSE:To produce fine powder of high-purity senarmontite, in high efficiency, by adding a >=5C alcohol and benzene or ether to SbCl3, introducing ammonia into the mixture, separating the produced NH4Cl, and hydrolyzing the residue. CONSTITUTION:SbCl3 is added with more than equivalent amount (based on SbCl3) of a >=5C alcohol and a sufficient amount of benzene or ether (e.g. ethyl ether) to dissolve the produced antimony alkoxide. Ammonia gas is introduced into the mixture under agitation to obtain a solution of antimony alkoxide containing NH4Cl. The solution is distilled under normal pressure to separate benzene, etc., and then distilled under a vacuum of about 30mm.Hg to remove NH4Cl. The obtained solution is added with water, and hydrolyzed at <=40 deg.C to obtain the objective fine powder of senarmontite having an average particle diameter of about 0.2mu.</p> |
