发明名称 |
Solid phosphoric acid catalyst, and method for producing trioxane |
摘要 |
A solid phosphoric acid catalyst which, when gas-phase synthesizing trioxane from formaldehyde, results in production of trioxane at a high yield and at a high selection rate by markedly suppressing side reactions, reduces the adhesion of organic matter to the catalyst surface, and achieves a stable and long-term catalyst reaction. This solid phosphoric acid catalyst contains silicon phosphate oxide (SPO) obtained by sintering at a temperature of at least 200° C. a carrier material to which a phosphoric acid component has been added, and the total quantity of acid does not exceed 5 mmol per 1 g of solid phosphoric acid catalyst when calculated as acid quantity determined by NH3-TPD measurement. |
申请公布号 |
US9409159(B2) |
申请公布日期 |
2016.08.09 |
申请号 |
US201414890870 |
申请日期 |
2014.04.15 |
申请人 |
CLARIANT CATALYSTS (JAPAN) K.K. |
发明人 |
Nakao Hiroaki;Kubota Yutaka;Chen Xin |
分类号 |
B01J27/182;C07D323/06;B01J37/08;B01J21/12;B01J21/16;B01J27/16;B01J35/02;B01J35/10;B01J37/02 |
主分类号 |
B01J27/182 |
代理机构 |
Knobbe Martens Olson & Bear LLP |
代理人 |
Knobbe Martens Olson & Bear LLP |
主权项 |
1. A solid phosphoric acid catalyst comprising a silicon phosphate oxide, wherein a quantity of acid determined by an NH3-TPD measurement method is no more than 5 mmol per 1 g of catalyst mass. |
地址 |
Tokyo JP |