IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0914290
(2010-10-28)
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등록번호 |
US-8415495
(2013-04-09)
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발명자
/ 주소 |
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출원인 / 주소 |
- Catalytic Distillation Technologies
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
25 |
초록
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Processes for the alcoholysis, inclusive of transesterification and/or disproportionation, of reactants are disclosed. The alcoholysis process may include feeding reactants and a trace amount of soluble organometallic compound to a reactor comprising a solid alcoholysis catalyst, wherein the soluble
Processes for the alcoholysis, inclusive of transesterification and/or disproportionation, of reactants are disclosed. The alcoholysis process may include feeding reactants and a trace amount of soluble organometallic compound to a reactor comprising a solid alcoholysis catalyst, wherein the soluble organometallic compound and the solid alcoholysis catalyst each independently comprise a Group II to Group VI element, which may be the same element in various embodiments. As an example, diphenyl carbonate may be continuously produced by performing transesterification over a solid catalyst followed by disproportionation, where a trace amount of soluble organometallic compound is fed to the transesterification reactor. Also disclosed is a process for reactivating a spent solid alcoholysis catalyst, such as a catalyst useful for transesterifications and/or disproportionations, the process including removing polymeric materials deposited on the catalyst and re-depositing catalytically active metals on the solid catalyst.
대표청구항
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1. An alcoholysis process for producing dialkyl carbonates, comprising: feeding reactants necessary to produce a dialkyl carbonate or an intermediate for the production of a dialkyl carbonate and a trace amount of soluble organometallic compound to a reactor comprising a solid alcoholysis catalyst;w
1. An alcoholysis process for producing dialkyl carbonates, comprising: feeding reactants necessary to produce a dialkyl carbonate or an intermediate for the production of a dialkyl carbonate and a trace amount of soluble organometallic compound to a reactor comprising a solid alcoholysis catalyst;wherein the soluble organometallic compound and the solid alcoholysis catalyst each independently comprise a Group II to Group VI element. 2. The process of claim 1, wherein the alcoholysis is a transesterification. 3. The process of claim 1, wherein the alcoholysis is a disproportionation. 4. The process of claim 1, wherein the soluble organometallic compound and the solid alcoholysis catalyst each comprise the same Group II to Group VI element. 5. The process of claim 1, comprising: contacting the reactants in the presence of the solid alcoholysis catalyst to alcoholyze at least a portion of the reactants; andrecovering a reactor effluent comprising the soluble organometallic compound, alcoholysis product, and unreacted reactants. 6. The process of claim 1, wherein the soluble organometallic compound is fed at a rate in the range of 1 ppm to 2000 ppm by weight, based on a total weight of the feed reactants. 7. The process of claim 1, wherein the solid alcoholysis catalyst comprises at least one of an immobilized organotitanium compound and a supported titanium compound, and the soluble organometallic compound comprises a titanium compound soluble in the feed reactants. 8. The process of claim 1, wherein the solid alcoholysis catalyst comprises at least one of an immobilized organocalcium compound and a supported calcium compound, and the soluble organometallic compound comprises a calcium compound soluble in the feed reactants. 9. The process of claim 1, wherein the solid alcoholysis catalyst comprises at least one of an immobilized organomagnesium compound and a supported magnesium compound, and the soluble organometallic compound comprises a magnesium compound soluble in the feed reactants. 10. The process of claim 1, wherein the solid alcoholysis catalyst comprises at least one of an immobilized organozinc compound and a supported zinc compound, and the soluble organometallic compound comprises a zinc compound soluble in the feed reactants. 11. The process of claim 1, wherein the solid alcoholysis catalyst comprises at least one of an immobilized organotin compound and a supported tin compound, and the soluble organometallic compound comprises a tin compound soluble in the feed reactants. 12. The process of claim 1, wherein the solid alcoholysis catalyst comprises at least one of an immobilized organoantimony compound and a supported antimony compound, and the soluble organometallic compound comprises an antimony compound soluble in the feed reactants. 13. The process of claim 3, further comprising recovering at least a portion of the soluble organometallic compound from the reactor effluent. 14. The process of claim 13, further comprising recycling at least a portion of the recovered soluble organometallic compound to the alcoholysis reactor. 15. The process of claim 1, wherein the solid alcoholysis catalyst comprises at least one of an immobilized organolanthanide compound and a supported lanthanide compound, and the soluble organometallic compound comprises a lanthanide compound soluble in the feed reactants. 16. The process of claim 1, wherein the solid alcoholysis catalyst comprises at least one of an immobilized organoactinide compound and a supported actinide compound, and the soluble organometallic compound comprises a actinide compound soluble in the feed reactants. 17. The process of claim 1, wherein the solid alcoholysis catalyst and the soluble organometallic compound each independently comprise La or Ac. 18. An alcoholysis process for producing dialkyl carbonates, comprising: feeding one or more reactants, selected from the group consisting of an alkyl alcohol, a diaryl carbonate, a cyclic carbonate, urea, an organic carbamate, an aryl alkyl carbonate, and an alkyl aryl carbonate, and a trace amount of soluble organometallic compound to a reactor comprising a solid alcoholysis catalyst;wherein the soluble organometallic compound and the solid alcoholysis catalyst each independently comprise a Group II to Group VI element.
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