公开(公告)号：US4859439A

公开(公告)日：1989-08-22

申请号：US102639

申请日：1987-09-30

申请人： Hiroaki Rikimaru ,  Tadao Nakatsuji ,  Toshikatsu Umaba ,  Kuzuhiko Nagano ,  Kazuya Mishina ,  Hiromitsu Shimizu

发明人： Hiroaki Rikimaru ,  Tadao Nakatsuji ,  Toshikatsu Umaba ,  Kuzuhiko Nagano ,  Kazuya Mishina ,  Hiromitsu Shimizu

IPC分类号： B01D53/86 ,  B01J21/06 ,  B01J23/00 ,  B01J23/22 ,  B01J23/28 ,  B01J23/30 ,  B01J35/10

CPC分类号： B01J21/063 ,  B01D53/8628 ,  B01J23/22 ,  B01J35/1038 ,  B01J35/1061 ,  B01J35/1066 ,  B01J35/1071 ,  B01J35/108

摘要： A catalyst for denitrizing nitrogen oxides contained in waste gases, which comprises:(a) titanium, and(b) at least one base metal selected from the group consisting of V, W, Mo, Mn, Cu, Fe, Cr, Co, Ni, Zn and Sn, the catalyst containing titanium and the base metals in amounts of at least about 50% by weight in terms of oxides based on the catalyst, and titanium in amounts of about 80-99% by weight in terms of oxides and the base metals in amounts of about 20-1% by weight in terms of oxides, respectively, based on the total weight in terms of oxides of titanium and the base metals, and the catalyst having micropores of about 50-75000 .ANG. in radius in amounts of about 0.25-0.45 ml/g, and micropores of about 50-100 .ANG. in radius in amounts of about 10-40% by volume and micropores of about 500-60000 .ANG. in radius in amounts of not less than about 10% by volume, respectively, based on the total volume of the micropores of about 50-75000 .ANG. in radius, in the presence of a reducing gas at elevated temperatures.The catalyst retains a higher denitrizing activity over a long period time than the conventional catalysts, and is substantially free from deactivation with arsenic or arsenic compounds contained in waste gases.

摘要翻译： 1.一种用于脱氮废气中含有的氮氧化物的催化剂，其包括：（a）钛，和（b）选自V，W，Mo，Mn，Cu，Fe，Cr，Co， Ni，Zn和Sn中的至少约50重量％的钛和贱金属的催化剂，以氧化物为基准，以催化剂为基准，钛的量为约80-99重量％，以氧化物计， 基于以氧化物为基准的总重量计，以氧化物计为约20-1重量％的贱金属，以钛和贱金属的氧化物计的总重量，以及具有约50-75000安培的微孔的催化剂半径 约0.25-0.45ml / g的量的微孔和约50-100的微孔，其量为约10-40体积％，微孔为约500-60000，半径为不小于约10％ 体积，分别基于微孔的总体积约50-75000安培半径，在存在o f在升高的温度下还原气体。 与常规催化剂相比，催化剂在长时间内保持较高的脱氨活性，并且与废气中所含的砷或砷化合物基本上没有失活。

公开(公告)号：US4977127A

公开(公告)日：1990-12-11

申请号：US393071

申请日：1989-08-07

申请人： Hiroaki Rikimaru ,  Tadao Nakatsuji ,  Toshikatsu Umaba ,  Kazuhiko Nagano ,  Kazuya Mishina ,  Hiromitsu Shimizu

发明人： Hiroaki Rikimaru ,  Tadao Nakatsuji ,  Toshikatsu Umaba ,  Kazuhiko Nagano ,  Kazuya Mishina ,  Hiromitsu Shimizu

IPC分类号： B01D53/86 ,  B01J21/06 ,  B01J23/22 ,  B01J23/24 ,  B01J35/10

CPC分类号： B01J21/066 ,  B01D53/8628 ,  B01J21/063 ,  B01J23/22 ,  B01J35/002 ,  B01J35/10 ,  B01J35/1057

摘要： A catalyst for denitrizing nitrogen oxides contained in waste gases in the presence of arsenic compounds, which comprises: titanium and vanadium therein in weight ratios of oxides of titanium to oxides of vanadium ranging from 99.9:0.1 to 92.0:8.0, the vanadium being concentratedly contained in the surface layer of the catalyst up to 200 .mu.m in depth from the surface of the catalyst in concentrations of at least about 1.5 times as much as the concentrations of vanadium throughout the catalyst.The catalyst may further contain therein at least one of tungsten and zirconium.The catalyst preferably has micropores of about not less than about 50 .ANG. in amounts of 0.25-0.40 ml/g, and micropores of about 50-100 .ANG. in radius in amounts of about 10-40% by volume and micropores of about 1000-60000 .ANG. in radius in amounts of not less than about 10% by volume, respectively, based on the total volume of the micropores of not less than about 50.ANG. in radius.The catalyst retains a higher denitrizing activity over a long period of denitrizing operations in the presence of arsenic compounds contained waste gases than the conventional catalysts.

公开(公告)号：US5582809A

公开(公告)日：1996-12-10

申请号：US277041

申请日：1994-07-19

申请人： Hiroaki Rikimaru ,  Toshikatsu Umaba ,  Yoshiyuki Yoshikawa

发明人： Hiroaki Rikimaru ,  Toshikatsu Umaba ,  Yoshiyuki Yoshikawa

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/20 ,  B01J23/28 ,  B01J23/30 ,  B01J23/44 ,  B01J8/00 ,  C01B21/00

CPC分类号： B01J23/44 ,  B01D53/9418 ,  B01J23/20 ,  B01D2251/202 ,  B01D2251/204 ,  B01D2251/2062 ,  B01D2251/208 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/20769 ,  B01D2255/20776

摘要： A catalyst for reducing nitrogen oxides into nitrogen and water in the presence of a reducing agent, which comprises:(a) titanium;(b) at least one element selected from the group consisting of tungsten and molybdenum in a total amount of 10-25% by weight in terms of oxides; and(c) niobium in an amount of 0.1-2% by weight in terms of oxides.

摘要翻译： 一种在还原剂存在下将氮氧化物还原为氮和水的催化剂，其包括：（a）钛; （b）选自钨和钼的至少一种元素，其总量为氧化物换算为10-25重量％。 和（c）以氧化物计为0.1-2重量％的量的铌。

公开(公告)号：US4869735A

公开(公告)日：1989-09-26

申请号：US187470

申请日：1988-04-28

申请人： Masaki Miyazawa ,  Norihisa Kobayashi ,  Hiromu Takatsuka ,  Atsushi Morii ,  Toshio Koyanagi ,  Touru Seto ,  Kozo Iida ,  Shigeaki Mitsuoka ,  Hiroaki Rikimaru ,  Makoto Imanari ,  Takeo Koshikawa ,  Akihiro Yamauchi ,  Masayuki Hanada ,  Morio Fukuda ,  Kiyoshi Nagano

发明人： Masaki Miyazawa ,  Norihisa Kobayashi ,  Hiromu Takatsuka ,  Atsushi Morii ,  Toshio Koyanagi ,  Touru Seto ,  Kozo Iida ,  Shigeaki Mitsuoka ,  Hiroaki Rikimaru ,  Makoto Imanari ,  Takeo Koshikawa ,  Akihiro Yamauchi ,  Masayuki Hanada ,  Morio Fukuda ,  Kiyoshi Nagano

IPC分类号： B01D53/64 ,  B01D53/10 ,  B01D53/46 ,  B01D53/86 ,  B01D53/94 ,  B01J20/02 ,  B01J20/10 ,  B01J20/18 ,  B01J20/28 ,  B01D19/00 ,  B01D53/02

CPC分类号： B01D53/46 ,  B01D53/10 ,  B01D53/8625 ,  B01D53/8628 ,  B01J20/02 ,  B01J20/041 ,  B01J20/06 ,  B01J20/08 ,  B01J20/103 ,  B01J20/12 ,  B01J20/186 ,  Y10S95/902

摘要： Here is provided an adsorbent for adsorbing and removing an arsenic compound which becomes a catalyst poison in a selective contact reduction process for removing nitrogen oxides (NOx) from a combustion exhaust gas by the use of an ammonia as a reducing agent and a denitrating catalyst.The adsorbent of the present invention comprises a material in which the total volume of pores is 0.2 to 0.7 cc/g and the volume of the pores having a pore diameter of 300 .ANG. or more is 10% or more with respect to the total pore volume, and the material is a specific element, its oxide, an ion-exchanged zeolite or the like.In addition, the present invention is directed to a method for removing the arsenic compound from the combustion exhaust gas by injecting the adsorbent into the flow of the gas on the upstream side of the denitrating catalyst.

公开(公告)号：US4113660A

公开(公告)日：1978-09-12

申请号：US753323

申请日：1976-12-22

申请人： Kazunobu Abe ,  Hiroaki Rikimaru ,  Iwao Yamazaki ,  Hiroshi Hasegawa

发明人： Kazunobu Abe ,  Hiroaki Rikimaru ,  Iwao Yamazaki ,  Hiroshi Hasegawa

IPC分类号： B01D53/86 ,  B01J21/06 ,  B01J23/22 ,  B01J23/30 ,  B01J23/72 ,  B01J37/00 ,  B01J21/04 ,  B01J21/08

CPC分类号： B01J21/063 ,  B01D53/8628 ,  B01J23/22 ,  B01J23/30 ,  B01J23/72 ,  B01J37/0009

摘要： A process for preparing shaped catalysts or carriers mainly containing titanium oxide and improved in mechanical strength which comprises calcining a material mainly comprising titanium oxide or a substance convertible into titanium oxide on calcination in the presence of metatitanic acid sol or gel, said metatitanic acid sol being the one prepared by deflocculation of metatitanic acid obtained in the course of the production of titanium oxide according to a conventional sulfuric acid process and said metatitanic acid gel being the one prepared by adjusting said metatitanic acid sol to pH 1 or higher.

摘要翻译： 一种制备主要含有氧化钛的成型催化剂或载体的机械强度提高的方法，其包括在偏钛酸溶胶或凝胶的存在下煅烧主要包含氧化钛或可转化为氧化钛的物质的材料，所述偏钛酸溶胶为 根据常规硫酸法在氧化钛生产过程中获得的偏钛酸反应制备的所述偏钛酸凝胶是通过将所述偏钛酸溶液调节至pH 1或更高而制备的。

公开(公告)号：US4643984A

公开(公告)日：1987-02-17

申请号：US758072

申请日：1985-07-23

申请人： Kazunobu Abe ,  Masashi Aoki ,  Hiroaki Rikimaru ,  Takeshi Ito ,  Kazuhisa Hidaka ,  Kayoko Segawa

发明人： Kazunobu Abe ,  Masashi Aoki ,  Hiroaki Rikimaru ,  Takeshi Ito ,  Kazuhisa Hidaka ,  Kayoko Segawa

IPC分类号： C04B35/00 ,  C01G19/00 ,  C01G21/00 ,  C01G23/00 ,  C01G25/00 ,  C01G27/00 ,  C04B35/468 ,  C04B35/491 ,  C04B35/493 ,  C04B35/46

CPC分类号： C04B35/491 ,  B82Y30/00 ,  C01G19/00 ,  C01G21/00 ,  C01G23/003 ,  C01G23/006 ,  C01G25/00 ,  C01G25/006 ,  C01G27/006 ,  C04B35/4682 ,  C04B35/493 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/32 ,  C01P2004/62 ,  C01P2004/64

摘要： A process for producing a composition which includes a perovskite compound, the process comprising:(a) subjecting a mixture of a hydroxide of at least one A group element selected from the group consisting of Mg, Ca, Sr, Ba, Pb and rare earth elements and a hydroxide of at least one B group element selected from the group consisting of Ti, Zr, Hf and Sn, to the hydrothermal reaction in an aqueous reaction medium;(b) adding an insolubilizing agent to the resultant reaction mixture to insolubilize water-soluble compounds of the unreacted A group element dissolved in the aqueous medium so as to adjust the ratio of the group A element to the group B element in a resulting composition to a desired A/B ratio; or(c) filtering, washing with water and drying the resultant reaction mixture to provide a solid reaction product, dispersing the reaction product in an aqueous medium to form a slurry, adding to the slurry a water-soluble compound of the A group element, and then adding to the slurry an insolubilizing agent to insolubilize the water-soluble compound of the A group element so as to adjust the ratio of the group A element to the group B element in a resulting composition to a desired A/B ratio; and(d) filtering, washing and drying the resultant mixture to provide the composition which includes the perovskite compound having the desired A/B ratio.

摘要翻译： 一种制备包括钙钛矿化合物的组合物的方法，该方法包括：（a）对选自Mg，Ca，Sr，Ba，Pb和稀土的至少一种A族元素的氢氧化物的混合物 元素和选自Ti，Zr，Hf和Sn中的至少一种B族元素的氢氧化物，在水性反应介质中进行水热反应; （b）向所得反应混合物中加入不溶解剂，使溶解在水性介质中的未反应的A族元素的水溶性化合物不溶化，从而将所得组合物中的A族元素与B族元素的比例调整为 所需的A / B比; 或（c）过滤，用水洗涤并干燥得到的反应混合物以提供固体反应产物，将反应产物分散在水性介质中以形成浆料，向浆料中加入A组元素的水溶性化合物， 然后向所述浆料中添加不溶解剂以使所述A组元素的水溶性化合物不溶化，以将所得组合物中的A族元素与B族元素的比例调节至所需的A / B比; 和（d）过滤，洗涤和干燥所得混合物以提供包含具有所需A / B比的钙钛矿化合物的组合物。