公开(公告)号：US20090259070A1

公开(公告)日：2009-10-15

申请号：US12421172

申请日：2009-04-09

申请人： Yoshihiko OHISHI ,  Junya Yoshizawa ,  Eiichi Shiraishi

发明人： Yoshihiko OHISHI ,  Junya Yoshizawa ,  Eiichi Shiraishi

IPC分类号： C07C51/16 ,  B01J38/66

CPC分类号： B01J27/19 ,  B01J23/002 ,  B01J27/199 ,  B01J27/285 ,  B01J31/4015 ,  B01J38/66 ,  B01J2523/00 ,  C07C51/215 ,  C07C51/252 ,  Y02P20/584 ,  C07C57/04 ,  B01J2523/15 ,  B01J2523/17 ,  B01J2523/51 ,  B01J2523/53 ,  B01J2523/55 ,  B01J2523/68

摘要： A catalyst for the production of methacrylic acid comprising a heteropolyacid compound containing phosphorus and molybdenum is regenerated by a method comprising the steps of heat-treating a mixture containing a deactivated catalyst, water, a nitrate ion and an ammonium ion having a molar ratio to the nitrate ion of 1.3 or less at a temperature of at least 100° C., drying the mixture to obtain a dried catalyst, and calcining the dried catalyst. The regenerated catalyst has substantially the same catalytic activity as a fresh catalyst in a gas phase catalytic oxidation reaction of methacrolein, isobutylaldehyde, isobutane or isobutyric acid to prepare methacrylic acid.

摘要翻译： 包含含有磷和钼的杂多酸化合物的甲基丙烯酸的生产催化剂通过包括以下步骤的方法再生，所述方法包括以下步骤：将含有失活催化剂，水，硝酸根离子和铵离子的混合物热处理，所述失活催化剂， 硝酸根离子在至少100℃的温度下为1.3以下，干燥该混合物，得到干燥的催化剂，并煅烧干燥的催化剂。 在甲基丙烯醛，异丁醛，异丁烷或异丁酸的气相催化氧化反应中，再生催化剂具有与新鲜催化剂基本上相同的催化活性，从而制备甲基丙烯酸。

公开(公告)号：US07667074B2

公开(公告)日：2010-02-23

申请号：US11907362

申请日：2007-10-11

申请人： Junya Yoshizawa ,  Yoshihiko Ohishi ,  Eiichi Shiraishi

发明人： Junya Yoshizawa ,  Yoshihiko Ohishi ,  Eiichi Shiraishi

IPC分类号： C07C57/02 ,  B01J38/66

CPC分类号： B01J27/285 ,  B01J23/002 ,  B01J27/199 ,  B01J37/0009 ,  B01J38/02 ,  B01J38/66 ,  B01J2523/00 ,  B01J2523/15 ,  B01J2523/17 ,  B01J2523/51 ,  B01J2523/53 ,  B01J2523/55 ,  B01J2523/68

摘要： A catalyst for the production of methacrylic acid comprising a heteropolyacid compound containing phosphorus and molybdenum is regenerated by a method comprising the steps of drying a mixture containing a deactivated catalyst, an ammonium ion, a nitrate ion and water, molding the dried mixture, firstly calcining the molded product in an atmosphere of an oxidizing gas at a temperature of 360 to 410° C., and then secondly calcining the product in an atmosphere of a non-oxidizing gas at a temperature of 420 to 500° C. The regenerated catalyst has substantially the same catalytic activity as a fresh catalyst in a gas phase catalytic oxidation reaction of methacrolein, isobutylaldehyde, isobutane or isobutyric acid to prepare methacrylic acid.

摘要翻译： 包含含有磷和钼的杂多酸化合物的甲基丙烯酸的催化剂通过包括以下步骤的方法再生，所述方法包括干燥含有失活催化剂，铵离子，硝酸根离子和水的混合物，模制干燥的混合物，首先煅烧 将该成型体在氧化气体气氛中在360〜410℃的温度下，然后在420〜500℃的温度下，在非氧化性气氛中二次煅烧该产物。再生催化剂具有 在甲基丙烯醛，异丁醛，异丁烷或异丁酸的气相催化氧化反应中与新鲜催化剂基本上相同的催化活性以制备甲基丙烯酸。

公开(公告)号：US20080293968A1

公开(公告)日：2008-11-27

申请号：US11907362

申请日：2007-10-11

申请人： Junya Yoshizawa ,  Yoshihiko Ohishi ,  Eiichi Shiraishi

发明人： Junya Yoshizawa ,  Yoshihiko Ohishi ,  Eiichi Shiraishi

IPC分类号： C07C51/23 ,  B01J38/18

CPC分类号： B01J27/285 ,  B01J23/002 ,  B01J27/199 ,  B01J37/0009 ,  B01J38/02 ,  B01J38/66 ,  B01J2523/00 ,  B01J2523/15 ,  B01J2523/17 ,  B01J2523/51 ,  B01J2523/53 ,  B01J2523/55 ,  B01J2523/68

摘要： A catalyst for the production of methacrylic acid comprising a heteropolyacid compound containing phosphorus and molybdenum is regenerated by a method comprising the steps of drying a mixture containing a deactivated catalyst, an ammonium ion, a nitrate ion and water, molding the dried mixture, firstly calcining the molded product in an atmosphere of an oxidizing gas at a temperature of 360 to 410° C., and then secondly calcining the product in an atmosphere of a non-oxidizing gas at a temperature of 420 to 500° C. The regenerated catalyst has substantially the same catalytic activity as a fresh catalyst in a gas phase catalytic oxidation reaction of methacrolein, isobutylaldehyde, isobutane or isobutyric acid to prepare methacrylic acid.

摘要翻译： 包含含有磷和钼的杂多酸化合物的甲基丙烯酸的催化剂通过包括以下步骤的方法再生，所述方法包括干燥含有失活催化剂，铵离子，硝酸根离子和水的混合物，模制干燥的混合物，首先煅烧 将该成型体在氧化气体气氛中在360〜410℃的温度下，然后在420〜500℃的温度下，在非氧化性气氛中二次煅烧该产物。再生催化剂具有 在甲基丙烯醛，异丁醛，异丁烷或异丁酸的气相催化氧化反应中与新鲜催化剂基本上相同的催化活性以制备甲基丙烯酸。

公开(公告)号：US08640669B2

公开(公告)日：2014-02-04

申请号：US12675064

申请日：2008-05-20

申请人： Fumikazu Nakazawa ,  Akito Tanihata ,  Naoko Sato ,  Junya Yoshizawa

发明人： Fumikazu Nakazawa ,  Akito Tanihata ,  Naoko Sato ,  Junya Yoshizawa

IPC分类号： F02F3/10 ,  F16J1/08

CPC分类号： F16J1/04 ,  F02F3/027 ,  F02F3/105

摘要： To provide a piston for an internal combustion engine including a skirt which causes a relatively small frictional resistance and can maintain a favorable frictional property over an extended period of time. In a piston for an internal combustion engine having a skirt 4 on whose sliding surface a resin coating layer is deposited, the skirt 4 comprises a thin walled portion 51 located in a circumferentially middle part thereof and a pair of thick walled portions 52 provided on either lateral side of the thin walled portion 51. The resin coating layer 44 at least in the part thereof deposited on the thick walled portions 52 is formed with a plurality of dimples 45. The skirt may comprise a skirt main body 41 extending axially at a fixed distance from the central axial line of the piston in an axially middle part thereof, and a first reduced diameter portion 42 depending from the lower end of the skirt main body and having a progressively smaller diameter toward a lower end thereof. The dimples 45 may be arranged along a first boundary 6 between the skirt main body and first reduced diameter portion.

摘要翻译： 为了提供包括裙部的内燃机的活塞，其产生相对小的摩擦阻力并且可以在延长的时间段内保持良好的摩擦性能。 在具有在其滑动表面上沉积有树脂涂层的裙部4的内燃机的活塞中，裙部4包括位于其周向中间部分的薄壁部分51和设置在其上的一对厚壁部分52 薄壁部分51的侧面。至少在其部分沉积在厚壁部分52上的树脂涂层44形成有多个凹坑45.裙部可以包括裙部主体41，该裙部主体41以固定的方式轴向延伸 距离活塞的轴向中间部分的中心轴线的距离以及从裙主体的下端悬垂并且朝向其下端逐渐变小的直径的第一缩径部42。 凹部45可以沿着裙部主体和第一缩径部分之间的第一边界6布置。

公开(公告)号：US20110139114A1

公开(公告)日：2011-06-16

申请号：US12675064

申请日：2008-05-20

申请人： Fumikazu Nakazawa ,  Akito Tanihata ,  Naoko Sato ,  Junya Yoshizawa

发明人： Fumikazu Nakazawa ,  Akito Tanihata ,  Naoko Sato ,  Junya Yoshizawa

IPC分类号： F02F3/10

CPC分类号： F16J1/04 ,  F02F3/027 ,  F02F3/105

摘要： To provide a piston for an internal combustion engine including a skirt which causes a relatively small frictional resistance and can maintain a favorable frictional property over an extended period of time. In a piston for an internal combustion engine having a skirt 4 on whose sliding surface a resin coating layer is deposited, the skirt 4 comprises a thin walled portion 51 located in a circumferentially middle part thereof and a pair of thick walled portions 52 provided on either lateral side of the thin walled portion 51. The resin coating layer 44 at least in the part thereof deposited on the thick walled portions 52 is formed with a plurality of dimples 45. The skirt may comprise a skirt main body 41 extending axially at a fixed distance from the central axial line of the piston in an axially middle part thereof, and a first reduced diameter portion 42 depending from the lower end of the skirt main body and having a progressively smaller diameter toward a lower end thereof. The dimples 45 may be arranged along a first boundary 6 between the skirt main body and first reduced diameter portion.

摘要翻译： 为了提供包括裙部的内燃机的活塞，其产生相对小的摩擦阻力并且可以在延长的时间段内保持良好的摩擦性能。 在具有在其滑动表面上沉积有树脂涂层的裙部4的内燃机的活塞中，裙部4包括位于其周向中间部分的薄壁部分51和设置在其上的一对厚壁部分52 薄壁部分51的侧面。至少在其部分沉积在厚壁部分52上的树脂涂层44形成有多个凹坑45.裙部可以包括裙部主体41，该裙部主体41以固定的方式轴向延伸 距离活塞的轴向中间部分的中心轴线的距离以及从裙主体的下端悬垂并且朝向其下端逐渐变小的直径的第一缩径部42。 凹部45可以沿着裙部主体和第一缩径部分之间的第一边界6布置。