Hydrogen reaction + glass

Sokol skii, D. V., B. Y. Nogcrbekov and N. N. Gudeleva. 1986. Investigation of the activity of a palladium/glass membrane in catalytic hydrogenation reactions. Sov. Electrochem. 22(9) 1227-1229. 

The hydrogenation reactions were carried out in a 100-ml stainless-steel autoclave equipped with a 50-ml glass liner and PTFE cover to provide clean conditions. The reactor was magnetically stirred (n = 1000 min 1). The pressure was held at a constant value by a computerized constant volume - constant pressure equipment (Buchi BPC 9901). By monitoring the pressure inside the vessel and the injected pulses, the hydrogen uptake could be followed. Under standard conditions, 42 2 mg prereduced catalyst, 1.84 mmol substrate, 6.8 imol modifier and 5 ml solvent were used at 10 bar and room temperature. 

The toluene hydrogenation reaction, was carried out with 0.15 g of the catalyst sieved to 30-80 mesh using a glass tubular reactor operating at atmospheric pressure, 40°C, WHSV 1.5... 

Mosikawa of Asahi Glass [11] has studied the selectivity of four platinum group metals in this hydrogenation reaction. 

Hydrogenation reactions - These were performed in glass reactors or, when H2 pressure was greater than 100 kPa, in stainless AISI 316 autoclave (60 ml). The rate of H2 uptake was measured by using a Brooks electronic mass flow meter connected by an AD interface to an IBM XT personal computer. 

This is a disproportionation reaction, and is strongly catalysed by light and by a wide variety of materials, including many metals (for example copper and iron) especially if these materials have a large surface area. Some of these can induce explosive decomposition. Pure hydrogen peroxide can be kept in glass vessels in the dark, or in stone jars or in vessels made of pure aluminium with a smooth surface. 

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