-
公开(公告)号：DE1792567A1
公开(公告)日：1971-11-25
申请号：DE1792567
申请日：1968-09-20
Applicant: DEGUSSA
Inventor： MEYER-SIMON EUGEN DR , HECKEL EMIL DR , DUESING GERHARD DIPL-CHEM DR , RENNGARDT FRANZISKA DR
Abstract: 1277592 Germanium dioxide DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 4 Sept 1969 [20 Sept 1968] 43879/69 Heading C1A Amorphous highly dispersed germanium dioxide is prepared by reacting a volatile tetravalent germanium compound or a sprayable solution thereof under hydrolysing or oxidizing conditions in the gas phase or as an aerosol at a temperature above 1300 C., allowing the germanium dioxide formed to coagulate at a temperature of from 200 to 1000 C., and separating the gaseous reaction products. The germanium compound is preferably a halide or a volatile organo-germanium compound. The reaction is preferably carried out at a temperature of from 1400 to 1700 C. using a fuel gas of high calorific value with a free oxygen containing gas or pure oxygen, the mixture being reacted after passage through a nozzle. The germanium dioxide formed is preferably coagulated and separated at a temperature of from 400 to 700 C.
-
公开(公告)号：DE3061261D1
公开(公告)日：1983-01-13
申请号：DE3061261
申请日：1980-05-31
Applicant: DEGUSSA
Inventor： HECKEL EMIL DR , SEYS FREDDY , BAECKELMANS RENE , HEILMANN WOLFGANG DR
Abstract: The residual gas obtained in the pyrogenic production of metal oxides or metalloid oxides contain besides the desired product elemental chlorine if a chlorine containing starting material is employed. After cooling the residual gas the elemental chlorine is reacted to form hydrogen chloride by using an aqueous solution of a reducing agent and in this form the chlorine is subsequently washed out of the residual gas.
-
公开(公告)号：DE1767973A1
公开(公告)日：1971-10-07
申请号：DE1767973
申请日：1968-07-06
Applicant: DEGUSSA
Inventor： SCHUTTE DIETER DR , HECKEL EMIL DR , MEYER-SIMON EUGEN DR
-
-
Search Results
3
records
(took 0.024 seconds)
