Invention Grant
US08012904B2 Acid resistant ceramic materials, filter using the same, and preparation of them 失效
耐酸陶瓷材料,过滤器使用它们,并制备它们

  • Patent Title: Acid resistant ceramic materials, filter using the same, and preparation of them
  • Patent Title (中): 耐酸陶瓷材料,过滤器使用它们,并制备它们
  • Application No.: US11817932
    Application Date: 2006-03-07
  • Publication No.: US08012904B2
    Publication Date: 2011-09-06
  • Inventor: Young Nam Kim
  • Applicant: Young Nam Kim
  • Applicant Address: KR Gangnung-shi, Gangwon
  • Assignee: KH Chemicals Co., Ltd.
  • Current Assignee: KH Chemicals Co., Ltd.
  • Current Assignee Address: KR Gangnung-shi, Gangwon
  • Agency: Blakely, Sokoloff, Taylor & Zafman LLP.
  • Priority: KR10-2005-0018739 20050307
  • International Application: PCT/KR2006/000783 WO 20060307
  • International Announcement: WO2006/095992 WO 20060914
  • Main IPC: C04B35/18
  • IPC: C04B35/18 B01J23/40
Acid resistant ceramic materials, filter using the same, and preparation of them
Abstract:
The present invention provides porous ceramic materials having good resistance to heat, acid and base, comprising three or more oxides selected from an oxide of silicon (SiO), an oxide of aluminum (AlO), an oxide of a transition metal, MxOy, [wherein M represents a 4B, 5B or 6B-group transition metal which can be selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W or Ce, x represents an integer of 1 to 3, and y represents an integer of 1 to 3] and its preparation. By applying ceramic materials prepared according to the present invention that are structurally, thermally and chemically stable to a porous honeycomb support for the purification of exhaust gas or to a filter (DPF, Diesel Particulate Filter) for the purification of diesel engine exhaust gas, it is possible to prevent or remarkably reduce any structural destruction caused by corrosive gas, which results from employing a cordierite material as a structural support.
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