公开(公告)号：DE1592866A1

公开(公告)日：1971-02-18

申请号：DE1592866

申请日：1967-10-19

Applicant: DEGUSSA

Inventor： KLOEPFER HARRY DIPL-CHEM DR ,  JAEGER GERHARD DIPL-CHEM DR ,  MEYER-SIMON EUGEN DIPL-CHEM DR ,  DUESING GERHARD DIPL-CHEM DR ,  KUEHNER GERHARD DIPL-CHEM DR

IPC: C09C1/50

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

IPC: C01G17/02 ,  C08G63/86

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：DE1592867A1

公开(公告)日：1971-03-04

申请号：DE1592867

申请日：1967-10-19

Applicant: DEGUSSA

Inventor： KLOEPFER HARRY DIPL-CHEM DR ,  JAEGER GERHARD DR ,  MEYER-SIMON EUGEN DIPL-CHEM DR ,  DUESING GERHARD DIPL-CHEM DR ,  KUEHNER GERHARD DIPL-CHEM DR ,  TUERK GUENTER DIPL-CHEM DR

IPC: C09C1/50