A novel treated charge zeolite is prepared by treating charge zeolite (which is essentially free of Secondary Pores) with steam for 5-60 hours at 1000 DEG F.-1500 DEG F. Product is particularly characterized by increased Secondary Pore Volume (pores of diameter of 100A-600A) in amount of as high as 0.20 cc/g.
申请公布号
US5069890(A)
申请公布日期
1991.12.03
申请号
US19910670838
申请日期
1991.03.18
申请人
TEXACO INC.
发明人
DAI, PEI-SHING E.;SHERWOOD, JR., DAVID E.;MARTIN, BOBBY R.