发明名称 |
processo para produzir uma metilenodianilina, catalisador sólido para produzir uma metilenodianilina e processo para produzir um catalisador ácido de sílica-óxido metálico sólido |
摘要 |
<p>The present disclosure relates to compositions, systems, and methods of forming an amine (e.g., methylenedianiline (MDA)) using an acid catalyst including, for example, a metal oxide-silica catalyst calcined at temperature(s) of about >=500° C. to form a solid acid silica-metal oxide catalyst. A metal oxide of a solid acid silica-metal oxide catalyst may comprise alumina. A process for making a solid acid silica-metal oxide catalyst may comprise calcining an amorphous alumina-silica material at temperature(s) of about >=500° C. and/or under an anhydrous and/or inert atmosphere. A rearrangement reaction of the condensation product of aniline and formaldehyde in the presence of a solid acid silica-metal oxide catalyst may yield more MDA and/or more desirable isomer(s) of MDA than reactions performed with a corresponding catalyst calcined at temperature(s) of less than 500° C.</p> |
申请公布号 |
BRPI0912593(A2) |
申请公布日期 |
2015.10.13 |
申请号 |
BR2009PI12593 |
申请日期 |
2009.08.14 |
申请人 |
DOW GLOBAL TECHNOLOGIES LLC |
发明人 |
DAVID MOLZAHN;HEIKO WEINER;ROBERT J. GULOTTY JR. |
分类号 |
B01J21/12;B01J37/00;C07C209/78 |
主分类号 |
B01J21/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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