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1.
公开(公告)号:US20150284294A1
公开(公告)日:2015-10-08
申请号:US14437578
申请日:2013-03-07
Applicant: DOW GLOBAL TECHNOLOGIES LLC
Inventor: Michael T. Malanga , James J. O'Brien , Aleksander J. Pyzik , Nicholas M. Shinkel , Clifford S. Todd , Paul C. Vosejpka , Robin P. Ziebarth
IPC: C04B35/185 , F01N3/021 , C04B35/64
CPC classification number: C04B35/185 , C04B35/565 , C04B35/584 , C04B35/64 , C04B2235/322 , C04B2235/3224 , C04B2235/3229 , C04B2235/3272 , C04B2235/46 , C04B2235/6565 , C04B2235/661 , C04B2235/72 , C04B2235/85 , C04B2235/96 , F01N3/021
Abstract: A porous ceramic composition having improved thermal stability is comprised of ceramic grains bonded together by a grain boundary phase comprised of silica, rare earth element that is Eu, Gd, Nd or mixture thereof and oxygen and optionally yttrium, wherein the grain boundary phase has a amount of an alkali, an alkaline earth metal and a transition metal other than yttrium that is at most 2% by weight of the grain boundary phase.
Abstract translation: 具有改善的热稳定性的多孔陶瓷组合物由通过由二氧化硅,作为Eu,Gd,Nd或其混合物的稀土元素和氧和任选的钇组成的晶界相结合在一起的陶瓷晶粒组成,其中晶界相具有 碱,碱土金属和除钇以外的过渡金属的量相当于晶界相的2%以下。
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2.
公开(公告)号:US20150299045A1
公开(公告)日:2015-10-22
申请号:US14437580
申请日:2013-03-07
Applicant: DOW GLOBAL TECHNOLOGIES LLC
Inventor: Michael T. Malanga , James J. O'Brien , Aleksander J. Pyzik , Nicholas M. Shinkel , Clifford S. Todd , Paul C. Vosejpka , Robin P. Ziebarth
IPC: C04B35/185
CPC classification number: C04B35/185 , C04B35/565 , C04B35/584 , C04B38/00 , C04B2111/00793 , C04B2235/3206 , C04B2235/3208 , C04B2235/3217 , C04B2235/322 , C04B2235/3224 , C04B2235/3225 , C04B2235/3272 , C04B2235/349 , C04B2235/442 , C04B2235/443 , C04B2235/449 , C04B2235/46 , C04B2235/6565 , C04B2235/6587 , C04B2235/661 , C04B2235/72 , C04B2235/85 , C04B2235/96 , C04B38/0006
Abstract: A porous ceramic composition having improved thermal stability is comprised of ceramic grains bonded together by grain boundary phase comprised of silica, yttrium and oxygen wherein the amount of alkali metals, alkaline earth metals and other transition metals not including rare earth metals is at most 2% by weight of the grain boundary phase.
Abstract translation: 具有改善的热稳定性的多孔陶瓷组合物包括通过由二氧化硅,钇和氧组成的晶界相结合在一起的陶瓷颗粒,其中不包括稀土金属的碱金属,碱土金属和其它过渡金属的量为至多2% 的晶界相。
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3.
公开(公告)号:US09550700B2
公开(公告)日:2017-01-24
申请号:US14437580
申请日:2013-03-07
Applicant: Dow Global Technologies LLC
Inventor: Michael T. Malanga , James J. O'Brien , Aleksander J. Pyzik , Nicholas M. Shinkel , Clifford S. Todd , Paul C. Vosejpka , Robin P. Ziebarth
IPC: C04B35/00 , C04B35/52 , C04B35/56 , C04B35/185 , C04B35/565 , C04B35/584 , C04B38/00 , C04B111/00
CPC classification number: C04B35/185 , C04B35/565 , C04B35/584 , C04B38/00 , C04B2111/00793 , C04B2235/3206 , C04B2235/3208 , C04B2235/3217 , C04B2235/322 , C04B2235/3224 , C04B2235/3225 , C04B2235/3272 , C04B2235/349 , C04B2235/442 , C04B2235/443 , C04B2235/449 , C04B2235/46 , C04B2235/6565 , C04B2235/6587 , C04B2235/661 , C04B2235/72 , C04B2235/85 , C04B2235/96 , C04B38/0006
Abstract: A porous ceramic composition having improved thermal stability is comprised of ceramic grains bonded together by grain boundary phase comprised of silica, yttrium and oxygen wherein the amount of alkali metals, alkaline earth metals and other transition metals not including rare earth metals is at most 2% by weight of the grain boundary phase.
Abstract translation: 具有改善的热稳定性的多孔陶瓷组合物包括通过由二氧化硅,钇和氧组成的晶界相结合在一起的陶瓷颗粒,其中不包括稀土金属的碱金属,碱土金属和其它过渡金属的量为至多2% 的晶界相。
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4.
公开(公告)号:US09481605B2
公开(公告)日:2016-11-01
申请号:US14437578
申请日:2013-03-07
Applicant: Dow Global Technologies LLC
Inventor: Michael T. Malanga , James J. O'Brien , Aleksander J. Pyzik , Nicholas M. Shinkel , Clifford S. Todd , Paul C. Vosejpka , Robin P. Ziebarth
IPC: C04B35/00 , C04B35/185 , C04B35/565 , C04B35/584 , C04B35/64 , F01N3/021
CPC classification number: C04B35/185 , C04B35/565 , C04B35/584 , C04B35/64 , C04B2235/322 , C04B2235/3224 , C04B2235/3229 , C04B2235/3272 , C04B2235/46 , C04B2235/6565 , C04B2235/661 , C04B2235/72 , C04B2235/85 , C04B2235/96 , F01N3/021
Abstract: A porous ceramic composition having improved thermal stability is comprised of ceramic grains bonded together by a grain boundary phase comprised of silica, rare earth element that is Eu, Gd, Nd or mixture thereof and oxygen and optionally yttrium, wherein the grain boundary phase has a amount of an alkali, an alkaline earth metal and a transition metal other than yttrium that is at most 2% by weight of the grain boundary phase.
Abstract translation: 具有改善的热稳定性的多孔陶瓷组合物由通过由二氧化硅,作为Eu,Gd,Nd或其混合物的稀土元素和氧和任选的钇组成的晶界相结合在一起的陶瓷晶粒组成,其中晶界相具有 碱,碱土金属和除钇以外的过渡金属的量相当于晶界相的2%以下。
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公开(公告)号:US09764991B2
公开(公告)日:2017-09-19
申请号:US14345423
申请日:2012-11-07
Applicant: DOW GLOBAL TECHNOLOGIES LLC
Inventor: Aleksander J. Pyzik , Nicholas M. Shinkel , Robin P. Ziebarth
CPC classification number: C04B38/0096 , C04B35/44 , C04B35/6286 , C04B35/62863 , C04B35/62884 , C04B35/62894 , C04B35/62897 , C04B38/0006 , C04B38/0054 , C04B41/009 , C04B41/5037 , C04B41/87 , C04B2235/48 , Y10T428/24149 , C04B35/10 , C04B35/185 , C04B35/19 , C04B35/195 , C04B35/478 , C04B41/4529 , C04B41/4552 , C04B41/457 , C04B41/4596
Abstract: Porous aluminum-containing ceramic bodies are treated to form acicular mullite crystals onto the surfaces of their pores. The crystals are formed by contacting the body with a fluorine-containing gas or a source of both fluorine and silicon atoms to form fluorotopaz at the surface of the pores, and then decomposing the fluorotopaz to form acicular mullite crystals. This process allows the surface area of the ceramic body to be increased significantly while retaining the geometry (size, shape, general pore structure) of the starting body. The higher surface area makes the body more efficient as a particulate filter and also allows for easier introduction of catalytic materials.
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