JP2007105716A5 - - Google Patents

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Publication number
JP2007105716A5
JP2007105716A5 JP2005377635A JP2005377635A JP2007105716A5 JP 2007105716 A5 JP2007105716 A5 JP 2007105716A5 JP 2005377635 A JP2005377635 A JP 2005377635A JP 2005377635 A JP2005377635 A JP 2005377635A JP 2007105716 A5 JP2007105716 A5 JP 2007105716A5
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Japan
Prior art keywords
raw material
material slurry
drying
specific viscosity
methacrylic acid
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JP2005377635A
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Japanese (ja)
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JP2007105716A (en
JP4895265B2 (en
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Priority claimed from JP2005377635A external-priority patent/JP4895265B2/en
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Claims (2)

少なくともモリブデンを含む原料スラリーを乾燥装置へ供給し、該乾燥装置内で前記原料スラリーを乾燥して乾燥粉を得る工程を有する、少なくともモリブデンを含むメタクロレインおよび／またはメタクリル酸合成用触媒の製造方法において、前記乾燥の開始時から終了時までの間、原料スラリーの粘度（単位：ｋｇ／（ｍ・ｓ））を原料スラリーの比重（単位：ｋｇ／ｍ３）で除した値である原料スラリーの比粘度（ｍ２／ｓ）が、下記式（Ｉ）を満足することを特徴とするメタクロレインおよび／またはメタクリル酸合成用触媒の製造方法。
０．９５Ｘ０≦Ｘ≦１．０５Ｘ０ （Ｉ）
Ｘ：原料スラリーの比粘度（ｍ２／ｓ）
Ｘ０：乾燥開始時の原料スラリーの比粘度（ｍ２／ｓ） A method for producing a catalyst for synthesizing methacrolein and / or methacrylic acid containing at least molybdenum, comprising a step of supplying a raw material slurry containing at least molybdenum to a drying device and drying the raw material slurry in the drying device to obtain a dry powder. The raw material slurry having a value obtained by dividing the viscosity (unit: kg / (m · s)) of the raw material slurry by the specific gravity (unit: kg / m 3 ) of the raw material slurry from the start to the end of the drying The method for producing methacrolein and / or methacrylic acid synthesis catalyst, wherein the specific viscosity (m 2 / s) satisfies the following formula (I):
0.95X 0 ≦ X ≦ 1.05X 0 (I)
X: Specific viscosity of raw material slurry (m 2 / s)
X 0 : Specific viscosity of raw material slurry at the start of drying (m 2 / s) 前記乾燥開始時の原料スラリーの比粘度Ｘ０が、２．５×１０−４〜７．０×１０−４ｍ２／ｓである請求項１記載のメタクロレインおよび／またはメタクリル酸合成用触媒の製造方法。 2. The catalyst for synthesizing methacrolein and / or methacrylic acid according to claim 1, wherein a specific viscosity X 0 of the raw material slurry at the start of drying is 2.5 × 10 −4 to 7.0 × 10 −4 m 2 / s. Manufacturing method.
JP2005377635A 2005-09-16 2005-12-28 Process for producing methacrolein and / or methacrylic acid synthesis catalyst Active JP4895265B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005377635A JP4895265B2 (en) 2005-09-16 2005-12-28 Process for producing methacrolein and / or methacrylic acid synthesis catalyst

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005270065 2005-09-16
JP2005270065 2005-09-16
JP2005377635A JP4895265B2 (en) 2005-09-16 2005-12-28 Process for producing methacrolein and / or methacrylic acid synthesis catalyst

Publications (3)

Publication Number Publication Date
JP2007105716A JP2007105716A (en) 2007-04-26
JP2007105716A5 true JP2007105716A5 (en) 2009-02-12
JP4895265B2 JP4895265B2 (en) 2012-03-14

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JP2005377635A Active JP4895265B2 (en) 2005-09-16 2005-12-28 Process for producing methacrolein and / or methacrylic acid synthesis catalyst

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JP (1) JP4895265B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009090200A (en) * 2007-10-05 2009-04-30 Mitsubishi Rayon Co Ltd Method for manufacturing catalyst for synthesizing unsaturated aldehyde and unsaturated carboxylic acid
JP5626583B2 (en) * 2010-01-28 2014-11-19 三菱レイヨン株式会社 Catalyst for producing methacrylic acid, method for producing the same, and method for producing methacrylic acid
US9643171B2 (en) 2010-02-25 2017-05-09 Saudi Basic Industries Corporation Method of making heteropoly acid compound catalysts
JP5462300B2 (en) * 2012-02-23 2014-04-02 三菱レイヨン株式会社 Process for producing catalyst for synthesis of unsaturated aldehyde and unsaturated carboxylic acid
JP7418252B2 (en) 2019-03-25 2024-01-19 日本化薬株式会社 Catalyst precursor, catalyst using the same, and manufacturing method thereof
JP2020179312A (en) 2019-04-23 2020-11-05 日本化薬株式会社 Catalyst, and production method thereof
CN114981008A (en) * 2020-01-08 2022-08-30 三菱化学株式会社 Method for producing catalyst for methacrylic acid production, method for producing methacrylic acid ester, and apparatus for producing catalyst for methacrylic acid production

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3391532B2 (en) * 1993-12-27 2003-03-31 住友化学工業株式会社 Method for producing catalyst for producing methacrylic acid
JP4947753B2 (en) * 2001-06-21 2012-06-06 三菱レイヨン株式会社 Catalyst for methacrylic acid synthesis and method for producing methacrylic acid
JP4280797B2 (en) * 2001-11-21 2009-06-17 三菱化学株式会社 Method for producing composite oxide catalyst
JP4242597B2 (en) * 2002-02-28 2009-03-25 株式会社日本触媒 Unsaturated aldehyde synthesis catalyst, production method thereof, and production method of unsaturated aldehyde using the catalyst
JP2005186064A (en) * 2003-12-04 2005-07-14 Mitsubishi Chemicals Corp Production method for catalyst for producing unsaturated aldehyde and unsaturated carboxylic acid

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