发明名称 |
Zeolite-based SCR catalysts and their use in diesel engine emission treatment |
摘要 |
A catalyst comprising a zeolite loaded with copper ions and at least one trivalent metal ion other than Al+3, wherein the catalyst decreases NOx emissions in diesel exhaust. The trivalent metal ions are selected from, for example, trivalent transition metal ions, trivalent main group metal ions, and/or trivalent lanthanide metal ions. In particular embodiments, the catalysts are selected from Cu—Fe-ZSM5, Cu—La-ZSM-5, Fe—Cu—La-ZSM5, Cu—Sc-ZSM-5, and Cu—In-ZSM5. The catalysts are placed on refractory support materials and incorporated into catalytic converters. |
申请公布号 |
US8987161(B2) |
申请公布日期 |
2015.03.24 |
申请号 |
US201012855794 |
申请日期 |
2010.08.13 |
申请人 |
UT-Battelle, LLC |
发明人 |
Narula Chaitanya K.;Yang Xiaofan |
分类号 |
B01J29/06;B01D53/56;B01D53/94;B01J23/825;B01J23/83;B01J29/46;B01J37/00;B01J37/02;B01J37/08 |
主分类号 |
B01J29/06 |
代理机构 |
Scully, Scott, Murphy & Presser P.C. |
代理人 |
Scully, Scott, Murphy & Presser P.C. |
主权项 |
1. A catalyst comprising a pentasil-containing zeolite loaded with copper ions and iron(III) ions, wherein said copper ions are present in said catalyst in a loading amount of at least 1.5 wt % and said iron(III) ions are present in said catalyst in a loading amount of less than 1 wt %, and said copper and iron loading amounts are effective to achieve a NOx conversion at 150° C. of at least 50% in the presence of a source of ammonia reductant. |
地址 |
Oak Ridge TN US |