A process for the preparation of nitrided silica particles which comprises reacting silica particles with an ammonia-containing gas at a temperature in the range of from 300 DEG C to 900 DEG C.
申请公布号
EP0479354(A1)
申请公布日期
1992.04.08
申请号
EP19910202317
申请日期
1991.09.10
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人
LEDNOR, PETER WILLIAM;DE RUITER, RENE;SIE, SWANG TIONG
