[EN] PROCESS FOR THE PRODUCTION OF ESTERS OF NITRIC ACID<br/>[FR] PROCÉDÉ POUR LA PRODUCTION D'ESTERS DE L'ACIDE NITRIQUE
申请人:LONZA AG
公开号:WO2011120695A1
公开(公告)日:2011-10-06
Organic nitrates are prepared from mono-, di- or polyhydric alcohols by (i) simultaneously feeding a first continuous-flow microreactor unit with (a) concentrated nitric acid, (b) acetic anhydride, (c) optionally, a catalytic amount of a strong inorganic acid other than nitric acid, and (d) optionally, a solvent, to obtain a solution of acetyl nitrate, and (ii) simultaneously feeding a second continuous-flow microreactor with the solution of acetyl nitrate obtained in step (i) and said mono-, di- or polyhydric alcohol in liquid form or dissolved in a solvent to obtain a solution of said organic nitrate, and (iii) optionally, isolating said organic nitrate from the solution obtained in step (ii). The process of the invention is particularly suited for mono-nitration of dihydric alcohols such as 1,4-butanediol.
有机硝酸酯是通过以下步骤从单元、二元或多元醇制备的:(i)同时将浓硝酸、乙酸酐、可选地,除硝酸以外的一种强无机酸的催化量,以及可选地,溶剂,连续进料到第一连续流微反应器单元中,以获得乙酰硝酸的溶液;(ii)同时将步骤(i)中获得的乙酰硝酸溶液和所述单元、二元或多元醇以液态形式或溶解在溶剂中的形式连续进料到第二连续流微反应器中,以获得所述有机硝酸的溶液;(iii)可选地,从步骤(ii)中获得的溶液中分离所述有机硝酸。该发明的工艺特别适用于对1,4-丁二醇等二元醇进行单硝化。