Particulate exhaust filter for diesel engines,申请号EP20010108105-传众专利搜索

Particulate exhaust filter for diesel engines

申请公布号：EP1160426(A2)

申请号：EP20010108105

申请日期：2001.03.30

申请公布日期：2001.12.05

申请人：

CORNING INCORPORATED

发明人：HE, LIN;TANNER, CAMERON WAYNE;MERKEL, GREGORY ALBERT;WEXELL, DALE RICHARD

分类号：F01N3/02;B01D39/20;C04B41/50;C04B41/85;C04B41/87;F01N3/022;F01N3/028;(IPC1-7):F01N3/028;F01N3/021

主分类号：F01N3/02

摘要：<p>A filter for trapping and combusting diesel exhaust particulates and method of making the same. The filter comprises a monolithic substrate coated with a refractory oxide material which at a frequency of 2.45 GHz heats up said filter from room temperature to about 600 DEG C in 5 minutes or less, and wherein said refractory oxide material has a loss tangent which decreases with increasing temperature such that an equilibrium in said filter temperature is reached at no greater than 1100 DEG C. The microwave-absorbing material having a composition selected from the group consisting of A1-xMxB1-yM'y O3- alpha , where A and M are selected from the group consisting of Na, K, Rb, Ag, Ca, Sr, Ba, Pb, La, Pr, Nd, Bi, Ce, Th and combinations thereof; where B and M' are selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Rh, Ru, Pt, Zn, Nb, Ta, Mo, W and combinations thereof; wherein, the chemical formula is electrostatically balanced; (A'aRrM"m)(Z)4(X)6O24, where A' is from Group IA metals; where R is selected from Group IIA metals; where M" is selected from the group consisting of Mn, Co, Cu, Zn, Y, lanthanides and combinations thereof; where Z is selected from the group consisting of Zr, Hf, Ti, Nb, Ta, Y, lanthanides, Sn, Fe, Co, Al, Mn, Zn, Ni, and combinations thereof; where X is selected from the group consisting of P, Si, As, Ge, B, Al, and combinations thereof.</p>