Quartz hydrogen combustion

Catalytic Hydrogen Combustion 2 [CHC 2] Quartz-glass Micro Reactor for Catalytic Hydrogen Combustion... 

The experiments were conducted in the constant volume 2.2-L vessel with 80 mm diameter quartz observation window on the side, gas mixing propeller on the bottom and injector on the top, as shown in Fig. 23.2. The ambient condition inside the vessel was made to be high temperature and pressure by igniting hydrogen in an enrich oxygen and air mixture. The oxygen concentration after the hydrogen combustion was approximately 21% by volume (Azetsu et al., 2003 Matsui et al., 1979). 

Quartz Tube Method the sample is burned in a quartz tube and a stream of purified air carries the combustion gases into a hydrogen peroxide solution. 

For industrial purposes different designs of furnaces are used for combustion of chlorine in hydrogen. An essential feature of all these furnaces is the Bunsen quartz burner (see Fig. 113) which consists of two quartz pipes. A narrower one being inserted into a wider one and both covered in a steel casing. 

Fig. 113. Quartz burner for the combustion of hydrogen with chlorine.

Carbon and Hydrogen by Combustion.—When an organic compound is heated in the presence of copper oxide or in a stream of pure oxygen gas, it is oxidized or burned. If the oxidation is complete, all of the carbon of the compound is converted into carbon dioxide and all of the hydrogen into water. The combustion is carried out in a long tube of hard glass, or of fused quartz, known as a combustion tube. 

Wickbold combustion apparatus (Figure 12,2), This consists of a 250-ml sample reservoir, stainless steel burner, quartz combustion chamber, gas pressure regulators for oxygen, nitrogen, and hydrogen, and an absorber fitted with an extra-coarse frit (Koehler Instrument Co.). 

The techniques used by VeSefa [49] for the automatic microdetermination of carbon and hydrogen in organic compounds do not differ from the chromatographic method, except that chemical absorbers are used instead of the chromatographic column as a result, it is possible to detect only one product. An original sample of 1.0-1.6 mg was mixed with 30—40 mg of mixed oxides of cobalt and rapidly combusted in a quartz tube containing an appropriate catalyst. 

Hydrogen chloride gas is a noxious byproduct of many industrial chloride processes, and a major product from the combustion of most solid-rocket boosters. A quartz crystal microbalance using trlphenylamine as coating with 10" g/frequency was reported (37). The detector was capable of detecting 10 g of or 2.5 x 10" molecules of HCl. The performance of the detector was demonstrated during the Titan-Centaur launch in 1975. 

---