TH159985B - The process for the preparation of unsaturated esters as a result of Aldehyde by direct oxidative esterification - Google Patents
The process for the preparation of unsaturated esters as a result of Aldehyde by direct oxidative esterificationInfo
- Publication number
- TH159985B TH159985B TH1601001960A TH1601001960A TH159985B TH 159985 B TH159985 B TH 159985B TH 1601001960 A TH1601001960 A TH 1601001960A TH 1601001960 A TH1601001960 A TH 1601001960A TH 159985 B TH159985 B TH 159985B
- Authority
- TH
- Thailand
- Prior art keywords
- preparation
- liquid state
- aldehyde
- result
- unsaturated esters
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract 3
- 238000002360 preparation method Methods 0.000 title claims abstract 3
- 150000002148 esters Chemical class 0.000 title claims 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 title 1
- 238000006709 oxidative esterification reaction Methods 0.000 title 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract 6
- 239000007788 liquid Substances 0.000 claims abstract 5
- 239000001301 oxygen Substances 0.000 claims abstract 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract 3
- 229910052760 oxygen Inorganic materials 0.000 claims abstract 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N 2-methyl-2-propenoic acid methyl ester Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000003054 catalyst Substances 0.000 claims abstract 2
- 238000000605 extraction Methods 0.000 claims abstract 2
- 239000002245 particle Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims 1
- 230000001590 oxidative Effects 0.000 claims 1
- 230000002459 sustained Effects 0.000 claims 1
- 229910001882 dioxygen Inorganic materials 0.000 abstract 1
- 238000005886 esterification reaction Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
Abstract
การประดิษฐ์นี้เกี่ยวข้องกับกระบวนการสำหรับการเตรียมเมทิล เมทาคริเลต โดยการทำออกซิเดทีฟ เอสเทอริฟิเคชั่นโดยตรงของเมทาโครเลอินกับออกซิเจนและเมทานอล ซึ่งถูกดำเนินการในสถานะของเหลว ที่ความดันที่ 2 ถึง 100 บาร์กับตัวเร่งปฎิกิริยาที่เป็นทองคำ ตามการประดิษฐ์ สถานะของเหลวถูกสกัดออก อย่างต่อเนื่องจากถังปฎิกรณ์และในลักษณะที่เป็นทางเลือกหนึ่ง ที่เสริมด้วยแก๊สออกซิเจน, pH หลังจากถูก สกัดออกถูกปรับไปยัง pH ระหว่าง 5 และ 9 โดยวิธีการในการเติมสารละลายเบสและสถานะของเหลวนี้ถูก นำกลับไปในถังปฎิกรณ์อีกครั้งจนถึงขนาดที่อย่างน้อย 50% The invention involved a process for the preparation of methyl methacrylate by oxidation. Direct esterification of methacrylene with oxygen and methanol. Which is being operated in a liquid state At a pressure of 2 to 100 bar with a gold-plated catalyst According to invention The liquid state is extracted. Continuously from the reactor tank and in an alternative way When added with oxygen gas, pH after extraction was adjusted to a pH between 5 and 9. By this method of adding a base solution and the liquid state was Bring it back into the reactor tank again up to a size of at least 50%.
Claims (1)
Publications (3)
| Publication Number | Publication Date |
|---|---|
| TH159985B true TH159985B (en) | 2017-02-07 |
| TH1601001960A TH1601001960A (en) | 2017-02-07 |
| TH159985A TH159985A (en) | 2017-02-07 |
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