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1. 发明申请

US20110295041A1 CATALYST FOR PRODUCING UNSATURATED ALDEHYDE BY OXIDATION OF LOWER OLEFIN AT HIGH SPACE VELOCITY 有权
标题翻译：用于通过在高空间速度下氧化低烯烃来生产不饱和二胺的催化剂
公开(公告)号：US20110295041A1
公开(公告)日：2011-12-01
申请号：US13116309
申请日：2011-05-26
申请人： Jian Wang , Xuemei Li , Yan Zhuang , Kaimin Shi , Kun Jiao , Jianxue Ma , Xiaodong Chu , Jingming Shao
发明人： Jian Wang , Xuemei Li , Yan Zhuang , Kaimin Shi , Kun Jiao , Jianxue Ma , Xiaodong Chu , Jingming Shao
IPC分类号： C07C45/27 , B01J27/192 , B01J21/06 , B01J23/887 , C07C45/37 , B01J37/08 , B01J21/10 , B01J23/89 , B01J23/889 , B01J23/888 , B01J37/03 , B01J35/08 , C07C45/35
CPC分类号： B01J23/002 , B01J21/08 , B01J23/8876 , B01J23/8885 , B01J37/0009 , B01J37/031 , B01J2523/00 , C07C45/35 , C07C47/22 , B01J2523/13 , B01J2523/54 , B01J2523/67 , B01J2523/68 , B01J2523/842 , B01J2523/845 , B01J2523/27 , B01J2523/69 , B01J2523/847
摘要： A method of preparing a catalyst for producing acrolein by oxidation of propylene at high space velocity, said catalyst is a Mo—Bi—Fe—Co based composite metal oxide. Producing unsaturated aldehyde via partial oxidation of lower unsaturated olefin at high space velocity using said catalyst is suitable for process with or without off-gas recirculating. Said catalyst is prepared by co-precipitation, the reaction conditions for using said catalyst to produce unsaturated aldehyde are, the space velocity of unsaturated lower olefin relative to catalyst being 120˜200 h-1(STP), reaction temperature being 300˜420° C. and absolute pressure being 0.1˜0.5 MPa; a single-stage unsaturated lower olefin conversion ratio of greater than 98.0% and carbon oxide yield of less than 3.3% with an overall yield of unsaturated lower aldehyde and acid of greater than 94.0% are obtained. The process to prepare the said catalyst is simple, easy to be repeated, and capable of industrial scale-up.
摘要翻译：一种通过丙烯以高空间速度氧化制备丙烯醛的催化剂的方法，所述催化剂是Mo-Bi-Fe-Co系复合金属氧化物。通过使用所述催化剂以高空间速度部分氧化低级不饱和烯烃来生产不饱和醛适用于有或没有废气再循环的方法。所述催化剂通过共沉淀制备，使用所述催化剂生成不饱和醛的反应条件是，不饱和低级烯烃相对于催化剂的空速为120〜200h -1（STP），反应温度为300〜420℃ C.绝对压力为0.1〜0.5MPa; 获得大于98.0％的单级不饱和低级烯烃转化率和小于3.3％的碳氧化物产率，不饱和低级醛和酸的总收率大于94.0％。制备所述催化剂的方法简单，易于重复，并能够进行工业放大。

2. 发明授权

US08481790B2 Catalyst for producing unsaturated aldehyde by oxidation of lower olefin at high space velocity 有权
标题翻译：用于通过以高空间速度氧化低级烯烃生产不饱和醛的催化剂
公开(公告)号：US08481790B2
公开(公告)日：2013-07-09
申请号：US13116309
申请日：2011-05-26
申请人： Jian Wang , Xuemei Li , Yan Zhuang , Kaimin Shi , Kun Jiao , Jianxue Ma , Xiaodong Chu , Jingming Shao
发明人： Jian Wang , Xuemei Li , Yan Zhuang , Kaimin Shi , Kun Jiao , Jianxue Ma , Xiaodong Chu , Jingming Shao
IPC分类号： C07C45/27 , B01J27/192 , B01J21/06 , B01J23/00
CPC分类号： B01J23/002 , B01J21/08 , B01J23/8876 , B01J23/8885 , B01J37/0009 , B01J37/031 , B01J2523/00 , C07C45/35 , C07C47/22 , B01J2523/13 , B01J2523/54 , B01J2523/67 , B01J2523/68 , B01J2523/842 , B01J2523/845 , B01J2523/27 , B01J2523/69 , B01J2523/847
摘要： A method of preparing a catalyst for producing acrolein by oxidation of propylene at high space velocity, said catalyst is a Mo—Bi—Fe—Co based composite metal oxide. Producing unsaturated aldehyde via partial oxidation of lower unsaturated olefin at high space velocity using said catalyst is suitable for process with or without off-gas recirculating. Said catalyst is prepared by co-precipitation, the reaction conditions for using said catalyst to produce unsaturated aldehyde are, the space velocity of unsaturated lower olefin relative to catalyst being 120˜200 h-1(STP), reaction temperature being 300˜420° C. and absolute pressure being 0.1˜0.5 MPa; a single-stage unsaturated lower olefin conversion ratio of greater than 98.0% and carbon oxide yield of less than 3.3% with an overall yield of unsaturated lower aldehyde and acid of greater than 94.0% are obtained. The process to prepare the said catalyst is simple, easy to be repeated, and capable of industrial scale-up.
摘要翻译：一种通过丙烯以高空间速度氧化制备丙烯醛的催化剂的方法，所述催化剂是Mo-Bi-Fe-Co系复合金属氧化物。通过使用所述催化剂以高空间速度部分氧化低级不饱和烯烃来生产不饱和醛适用于有或没有废气再循环的方法。所述催化剂通过共沉淀制备，使用所述催化剂生成不饱和醛的反应条件是，不饱和低级烯烃相对于催化剂的空速为120〜200h-1（STP），反应温度为300〜420℃ C.绝对压力为0.1〜0.5MPa; 获得大于98.0％的单级不饱和低级烯烃转化率和小于3.3％的碳氧化物产率，不饱和低级醛和酸的总收率大于94.0％。制备所述催化剂的方法简单，易于重复，并能够进行工业放大。

3. 发明申请

US20100204513A1 Preparation process of a complex oxide catalyst and application thereof to the synthesis of the acrylic acid 有权
标题翻译：复合氧化物催化剂的制备方法及其在丙烯酸合成中的应用
公开(公告)号：US20100204513A1
公开(公告)日：2010-08-12
申请号：US12690662
申请日：2010-01-20
申请人： Xuemei Li , Chunhua Qin , Kun Jiao , Shiqiang Feng , Yan Zhuang , Jianxue Ma , Xiaodong Zhu , Jingming Shao
发明人： Xuemei Li , Chunhua Qin , Kun Jiao , Shiqiang Feng , Yan Zhuang , Jianxue Ma , Xiaodong Zhu , Jingming Shao
IPC分类号： B01J31/02 , B01J21/06 , B01J23/28 , B01J23/22 , B01J23/30 , B01J23/72 , C07C51/16
CPC分类号： B01J23/002 , B01J21/08 , B01J23/8885 , B01J31/0202 , B01J37/0018 , B01J37/16 , B01J2523/00 , C07C51/235 , C07C57/04 , B01J2523/17 , B01J2523/25 , B01J2523/3706 , B01J2523/55 , B01J2523/68 , B01J2523/69 , B01J2523/56 , B01J2523/3712 , B01J2523/24 , B01J2523/3725
摘要： The present invention provides a complex oxide catalyst whose general formula is Mo12VaCubWcXdYeOf/Z. reducing agent needs to be added into the catalyst during the preparation process of the active component of the catalyst and (or) molding process of the catalyst. Specifically, X is at least one selected from a group consisting of Nb, Sb, Sr, Ba and Te; Y is at least one selected from a group consisting of La, Ce, Nd, Sm and Cs; “a” is ranging from 2 to 8; “b” is ranging from 1 to 6; “c” is ranging from 0.5 to 5; “d” is ranging from 0.01 to 4; “e” is ranging from 0.01 to 4; f is determined by the oxidation state of the component element; Z is silicon powder; the reducing agent is C2˜C6 diol or polyol.
摘要翻译：本发明提供一种复合氧化物催化剂，其通式为Mo12VaCubWcXdYeOf / Z。在催化剂的活性组分的制备过程和（或）催化剂的（或）模制过程中，需要将还原剂加入到催化剂中。具体地，X是选自Nb，Sb，Sr，Ba和Te中的至少一种; Y是选自La，Ce，Nd，Sm和Cs中的至少一种; “a”的范围从2到8; “b”范围从1到6; “c”范围从0.5到5; “d”范围从0.01到4; “e”范围从0.01到4; f由成分元素的氧化态决定; Z是硅粉; 还原剂为C 2〜C 6二醇或多元醇。

4. 发明授权

US08623780B2 Preparation process of a complex oxide catalyst and application thereof to the synthesis of the acrylic acid 有权
标题翻译：复合氧化物催化剂的制备方法及其在丙烯酸合成中的应用
公开(公告)号：US08623780B2
公开(公告)日：2014-01-07
申请号：US12690662
申请日：2010-01-20
申请人： Xuemei Li , Chunhua Qin , Kun Jiao , Shiqiang Feng , Yan Zhuang , Jianxue Ma , Xiaodong Zhu , Jingming Shao
发明人： Xuemei Li , Chunhua Qin , Kun Jiao , Shiqiang Feng , Yan Zhuang , Jianxue Ma , Xiaodong Zhu , Jingming Shao
IPC分类号： B01J23/00
CPC分类号： B01J23/002 , B01J21/08 , B01J23/8885 , B01J31/0202 , B01J37/0018 , B01J37/16 , B01J2523/00 , C07C51/235 , C07C57/04 , B01J2523/17 , B01J2523/25 , B01J2523/3706 , B01J2523/55 , B01J2523/68 , B01J2523/69 , B01J2523/56 , B01J2523/3712 , B01J2523/24 , B01J2523/3725
摘要： The present invention provides a complex oxide catalyst whose general formula is Mo12VaCubWcXdYeOf/Z. reducing agent needs to be added into the catalyst during the preparation process of the active component of the catalyst and (or) molding process of the catalyst. Specifically, X is at least one selected from a group consisting of Nb, Sb, Sr, Ba and Te; Y is at least one selected from a group consisting of La, Ce, Nd, Sm and Cs; “a” is ranging from 2 to 8; “b” is ranging from 1 to 6; “c” is ranging from 0.5 to 5; “d” is ranging from 0.01 to 4; “e” is ranging from 0.01 to 4; f is determined by the oxidation state of the component element; Z is silicon powder; the reducing agent is C2˜C6 diol or polyol.
摘要翻译：本发明提供一种复合氧化物催化剂，其通式为Mo12VaCubWcXdYeOf / Z。在催化剂的活性组分的制备过程和（或）催化剂的（或）模制过程中，需要将还原剂加入到催化剂中。具体地，X是选自Nb，Sb，Sr，Ba和Te中的至少一种; Y是选自La，Ce，Nd，Sm和Cs中的至少一种; “a”的范围从2到8; “b”范围从1到6; “c”范围从0.5到5; “d”范围从0.01到4; “e”范围从0.01到4; f由成分元素的氧化态决定; Z是硅粉; 还原剂是C 2〜C 6二醇或多元醇。

5. 发明申请

US20100323881A1 Preparation process of a catalyst used for gas phase oxidation of light alkenes to unsaturated aldehydes 有权
标题翻译：用于将轻烯烃气相氧化成不饱和醛的催化剂的制备方法
公开(公告)号：US20100323881A1
公开(公告)日：2010-12-23
申请号：US12690764
申请日：2010-01-20
申请人： Ge Luo , Xin Wen , Xiaoqi Zhao , Xuemei Li , Yan Zhuang , Jianxue Ma , Jingming Shao
发明人： Ge Luo , Xin Wen , Xiaoqi Zhao , Xuemei Li , Yan Zhuang , Jianxue Ma , Jingming Shao
IPC分类号： B01J27/228 , B01J21/18 , B01J21/06 , B01J23/06 , B01J23/18 , B01J23/745 , B01J23/75 , B01J23/28
CPC分类号： B01J23/8892 , B01J21/18 , B01J23/002 , B01J23/8876 , B01J27/224 , B01J2523/00 , C07C45/35 , C07C45/37 , C07C47/22 , B01J2523/15 , B01J2523/43 , B01J2523/54 , B01J2523/68 , B01J2523/842 , B01J2523/845 , B01J2523/13 , B01J2523/72 , B01J2523/847 , B01J2523/27 , B01J2523/14
摘要： The present invention provides a preparation process of complex oxides catalyst containing Mo, Bi, Fe and Co, which comprising steps as following: dissolving precursor compounds of the components for catalyst and complexing agent in water to obtain a solution, and then drying, molding and calcining the solution to obtain catalyst. The catalyst is used for gas phase oxidation of light alkenes to unsaturated aldehydes. The catalyst has high activity, selectivity and stability. The reaction condition is mild. The preparation process of the catalyst is easy to operate and can be used for mass production.
摘要翻译：本发明提供含有Mo，Bi，Fe和Co的复合氧化物催化剂的制备方法，其包括以下步骤：将催化剂和络合剂组分的前体化合物溶解在水中，得到溶液，然后干燥，成型和煅烧溶液以获得催化剂。催化剂用于将轻烯烃气相氧化成不饱和醛。该催化剂具有高活性，选择性和稳定性。反应条件温和。催化剂的制备方法易于操作，可用于批量生产。

6. 发明授权

US08288306B2 Preparation process of a catalyst used for gas phase oxidation of light alkenes to unsaturated aldehydes 有权
标题翻译：用于将轻烯烃气相氧化成不饱和醛的催化剂的制备方法
公开(公告)号：US08288306B2
公开(公告)日：2012-10-16
申请号：US12690764
申请日：2010-01-20
申请人： Ge Luo , Xin Wen , Xiaoqi Zhao , Xuemei Li , Yan Zhuang , Jianxue Ma , Jingming Shao
发明人： Ge Luo , Xin Wen , Xiaoqi Zhao , Xuemei Li , Yan Zhuang , Jianxue Ma , Jingming Shao
IPC分类号： B01J27/228 , B01J21/02 , B01J21/00 , B01J23/00 , B01J23/02 , B01J23/06
CPC分类号： B01J23/8892 , B01J21/18 , B01J23/002 , B01J23/8876 , B01J27/224 , B01J2523/00 , C07C45/35 , C07C45/37 , C07C47/22 , B01J2523/15 , B01J2523/43 , B01J2523/54 , B01J2523/68 , B01J2523/842 , B01J2523/845 , B01J2523/13 , B01J2523/72 , B01J2523/847 , B01J2523/27 , B01J2523/14
摘要： The present invention provides a preparation process of complex oxides catalyst containing Mo, Bi, Fe and Co, which comprising steps as following: dissolving precursor compounds of the components for catalyst and complexing agent in water to obtain a solution, and then drying, molding and calcining the solution to obtain catalyst. The catalyst is used for gas phase oxidation of light alkenes to unsaturated aldehydes. The catalyst has high activity, selectivity and stability. The reaction condition is mild. The preparation process of the catalyst is easy to operate and can be used for mass production.
摘要翻译：本发明提供含有Mo，Bi，Fe和Co的复合氧化物催化剂的制备方法，其包括以下步骤：将催化剂和络合剂组分的前体化合物溶解在水中，得到溶液，然后干燥，成型和煅烧溶液以获得催化剂。催化剂用于将轻烯烃气相氧化成不饱和醛。该催化剂具有高活性，选择性和稳定性。反应条件温和。催化剂的制备方法易于操作，可用于批量生产。

7. 发明申请

US20120135856A1 PROCESS FOR REGENERATING A DEACTIVATED HETEROPOLYMOLYBDOPHOSPHORIC ACID CATALYST 有权
标题翻译：还原脱乙酰基多羟基磷酸酯催化剂的方法
公开(公告)号：US20120135856A1
公开(公告)日：2012-05-31
申请号：US13240464
申请日：2011-09-22
申请人： Xin Wen , Linghua Zuo , Ge Luo , Xiaoqi Zhou , Yan Zhuang , Xiaodong Chu , Jingming Shao
发明人： Xin Wen , Linghua Zuo , Ge Luo , Xiaoqi Zhou , Yan Zhuang , Xiaodong Chu , Jingming Shao
IPC分类号： B01J38/64
CPC分类号： B01J38/66 , B01J23/002 , B01J27/19 , B01J27/199 , B01J27/285 , B01J37/0009 , B01J37/0036 , B01J38/02 , B01J38/12 , B01J2523/00 , C07C51/252 , Y02P20/584 , B01J2523/13 , B01J2523/15 , B01J2523/17 , B01J2523/51 , B01J2523/52 , B01J2523/53 , B01J2523/55 , B01J2523/68 , C07C57/04
摘要： The present invention provides a process for regenerating a deactivated heteropolymolybdophosphoric acid catalyst, comprising the steps of grinding the deactivated catalyst into particles having a particle size of 40 mesh or less, mixing the particles with a mixture comprising aqua ammonia, which is an aqueous solution containing ammonium ions and organic auxiliaries, kneading the mixture of particles and aqua ammonia in a kneader to obtain a paste, drying the paste, molding the paste into cylindrical particles with a through hole in its longitudinal axis, and heating the paste in atmosphere at 350˜450° C. for 1˜10 hours to produce the generated catalyst.
摘要翻译：本发明提供一种再生失活的杂多磷酸磷酸催化剂的方法，包括以下步骤：将失活的催化剂研磨成粒度为40目或更小的颗粒，将颗粒与包含水氨的混合物混合，所述混合物是含有铵离子和有机助剂，在捏合机中捏合颗粒和氨水的混合物以获得糊料，干燥糊料，将糊料成型为在其纵轴上具有通孔的圆柱形颗粒，并在350〜 450℃，保持1〜10小时，生成催化剂。

8. 发明授权

US09192930B2 Process for regenerating a deactivated heteropolymolybdophosphoric acid catalyst 有权
标题翻译：再生失活的杂多钼磷酸催化剂的方法
公开(公告)号：US09192930B2
公开(公告)日：2015-11-24
申请号：US13240464
申请日：2011-09-22
申请人： Xin Wen , Linghua Zuo , Ge Luo , Xiaoqi Zhao , Yan Zhuang , Xiaodong Chu , Jingming Shao
发明人： Xin Wen , Linghua Zuo , Ge Luo , Xiaoqi Zhao , Yan Zhuang , Xiaodong Chu , Jingming Shao
IPC分类号： B01J38/00 , B01J38/66 , B01J23/00 , B01J27/19 , B01J27/199 , B01J27/28 , B01J37/00 , B01J38/02 , B01J38/12 , C07C51/25
CPC分类号： B01J38/66 , B01J23/002 , B01J27/19 , B01J27/199 , B01J27/285 , B01J37/0009 , B01J37/0036 , B01J38/02 , B01J38/12 , B01J2523/00 , C07C51/252 , Y02P20/584 , B01J2523/13 , B01J2523/15 , B01J2523/17 , B01J2523/51 , B01J2523/52 , B01J2523/53 , B01J2523/55 , B01J2523/68 , C07C57/04
摘要： The present invention provides a process for regenerating a deactivated heteropolymolybdophosphoric acid catalyst, comprising the steps of grinding the deactivated catalyst into particles having a particle size of 40 mesh or less, mixing the particles with a mixture comprising aqua ammonia, an aqueous solution containing ammonium ions and organic auxiliaries, kneading the same in a kneader to obtain a paste, drying the paste, molding the paste into cylindrical particles with a through hole in its longitudinal axis, and heating the paste in atmosphere at 350˜450° C. for 1˜10 hours to produce the generated catalyst.
摘要翻译：本发明提供了一种再生失活的杂多磷酸磷酸催化剂的方法，包括以下步骤：将失活的催化剂研磨成粒度为40目或更小的颗粒，将颗粒与含有氨的混合物，含有铵离子的水溶液和有机助剂，在捏合机中捏合，得到糊剂，干燥糊料，将糊状物成型为在其纵轴上具有通孔的圆柱形颗粒，并将该糊料在大气中在350〜450℃下加热1〜 10小时以产生所产生的催化剂。

9. 发明申请

US20090124825A1 Method of (meth) acrylate production 审中-公开
标题翻译：（甲基）丙烯酸酯生产方法
公开(公告)号：US20090124825A1
公开(公告)日：2009-05-14
申请号：US11985409
申请日：2007-11-14
申请人： Yong Tang , Chunlei Zhang , Jianxue Ma , Jingming Shao
发明人： Yong Tang , Chunlei Zhang , Jianxue Ma , Jingming Shao
IPC分类号： C07C69/52
CPC分类号： C07C51/252 , C07C51/44 , C07C57/04
摘要： A method of methacrylate production includes the steps of providing methacrylate gas mixture; absorbing said gas mixture by water to form a solution mixture; introducing said solution mixture into a distillation column, separating impure methacrylate from said solution mixture in said distillation column that solution of said impure methacrylate is collected at said stripping section of said distillation column; and removing acetic acid from said impure methacrylate to produce methacrylate. It effectively enhances the separation capacity of the distillation column, lowers the whole column pressure drop and operation temperature, avoids the polymerization tendency of the methacrylate under high temperature, to make the water content of the bottom discharging decreases to 0.6%, acetic acid content reduces to below 2%, methyl acrylic content of the top column water phase decreases to 0.5%, thereby reduces the methacrylate products unit consumption and improves the product quality.
摘要翻译：甲基丙烯酸酯生产方法包括提供甲基丙烯酸酯气体混合物的步骤; 通过水吸收所述气体混合物以形成溶液混合物; 将所述溶液混合物引入蒸馏塔中，从所述蒸馏塔中的所述溶液混合物中分离不纯的甲基丙烯酸酯，将所述不纯的甲基丙烯酸酯的溶液收集在所述蒸馏塔的所述汽提部分; 并从所述不纯的甲基丙烯酸酯中除去乙酸以制备甲基丙烯酸酯。有效提高了蒸馏塔的分离能力，降低了整个柱压降和操作温度，避免了高温下甲基丙烯酸酯的聚合倾向，使底部放电的含水量降低至0.6％，乙酸含量降低至2％以下，顶级水相甲基丙烯酸含量降低至0.5％，从而降低甲基丙烯酸酯产品的单位消耗，提高产品质量。

10. 发明申请

US20090069605A1 Catalyst composition and producing process thereof for use in manufacturing methacrolein 失效
标题翻译：用于制造异丁烯醛的催化剂组合物及其制备方法
公开(公告)号：US20090069605A1
公开(公告)日：2009-03-12
申请号：US11983368
申请日：2007-11-07
申请人： Yan Zhuang , Chunlei Zhang , Xin Wen , Jun Li , Jingming Shao , Peizhang Zhang
发明人： Yan Zhuang , Chunlei Zhang , Xin Wen , Jun Li , Jingming Shao , Peizhang Zhang
IPC分类号： C07C45/27 , C01B33/24 , C01B35/10 , C01D1/02
CPC分类号： B01J37/08 , B01J21/08 , B01J23/002 , B01J23/02 , B01J23/14 , B01J23/8876 , B01J23/8877 , B01J37/0009 , B01J37/03 , B01J2523/00 , C07C45/35 , C07C47/22 , B01J2523/25 , B01J2523/54 , B01J2523/55 , B01J2523/68 , B01J2523/842 , B01J2523/845 , B01J2523/15 , B01J2523/47 , B01J2523/13 , B01J2523/56 , B01J2523/48 , B01J2523/847
摘要： A catalyst composition for use in manufacturing methacrolein by reacting with one of isobutene and t-butanol, the catalyst composition being represented by the formula of: x (Mo12Bi8FebCocAdBeOf)/y Z. Mo12BiaFebCocAdBeOf is an oxide compound. Z is a catalyst carrier is one of graphite, boron, silicon, germanium powder, and a mixture thereof Mo, Bi, Fe, Co, and O are chemical symbols of molybdenum, bismuth, iron, cobalt, and oxygen respectively. A is one of W, V, Ti, Zr, Nb, Ni, and Re. B is one of K, Rb, Cs, Sr, and Ba. The catalyst is adapted to not only enhance the production of methacrolein with high activeness and high selectivity but also effectively control the heat point of the catalyst during the methacrolein manufacturing process to prolong the catalyst life.
摘要翻译：一种用于通过与异丁烯和叔丁醇中的一种反应制备异丁烯醛的催化剂组合物，该催化剂组合物由下式表示：x（Mo 12 B 16 BrBeCeBeOf）/ y Z.Mo12BiaFebCocAdBeOf是一种氧化物。 Z是催化剂载体，分别是石墨，硼，硅，锗粉末及其混合物，Mo，Bi，Fe，Co和O分别是钼，铋，铁，钴和氧的化学符号。 A是W，V，Ti，Zr，Nb，Ni和Re中的一种。 B是K，Rb，Cs，Sr和Ba之一。该催化剂不仅可以增强高活性和高选择性的甲基丙烯醛的生产，而且可有效控制甲基丙烯醛制造过程中催化剂的热点，延长催化剂的使用寿命。

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