Invention Grant
US3576768A Novel alumina hydrate, a novel alumina obtained from the alumina hydrate, a catalyst containing the novel alumina and the method of preparing the same
失效
新型氧化铝水合物，从氢氧化铝获得的新型铝，含有新型氧化铝的催化剂及其制备方法
- Patent Title: Novel alumina hydrate, a novel alumina obtained from the alumina hydrate, a catalyst containing the novel alumina and the method of preparing the same
- Patent Title (中): 新型氧化铝水合物，从氢氧化铝获得的新型铝，含有新型氧化铝的催化剂及其制备方法
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Application No.: US3576768DApplication Date: 1969-10-29
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Publication No.: US3576768APublication Date: 1971-04-27
- Inventor: KEHL WILLIAM L , STEWART MEREDITH M
- Applicant: GULF RESEARCH DEVELOPMENT CO
- Assignee: St Jude Medical Inc
- Current Assignee: St Jude Medical Inc
- Priority: US87174269 1969-10-29
- Main IPC: B01J20/08
- IPC: B01J20/08 ; B01J21/04 ; B01J35/10 ; B01J37/10 ; C01F7/02 ; C07C5/10 ; B01J11/06 ; B01J11/32
Abstract:
A NOVEL ALUMINA HYDRATE OBTAINED BY HYDROTHERMALLY TREATING A CRYSTALLINE ALUMINA HYDRATE CONTAINING FROM 1.2 TO 2.6 MOLS OF WATER OF HYDRATION. THE HYDROTHERMAL TREATMENT IS CONDUCTED BY HEATING THE CRYSTALLINE ALUMINA HYDRATE IN THE PRESENCE OF WATER AT A TEMPERATURE IN THE RANGE FROM 225* TO 700*F. AND SUFFICIENT TO VAPORIZE THE WATER UNDER AUTOGENOUS PRESSURE AND THEREAFTER DRYING THE HYDROTHERMALLY TREATED CRYSTALLINE ALUMINA HYDRATE. A NOVEL ALUMINA IS OBTAINED FROM THE HYDROTHERMALLY TREATED ALUMINA HYDRATE BY CALCINING SUCH MATERIAL.
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