Hydrogenation of coal extract and cokery pitch over solid catalyst. [Precipitation of high-molecular-weight carbon compounds]

Technical Report · Wed Mar 01 04:00:00 EDT 1944

OSTI ID:7220569

Ibing, G

Experiments intended to decide whether it was feasible to hydrogenate certain products over solid catalysts are described. In earlier experiments it had been determined that coal extract dissolved in middle and heavy oils could not feasibly be hydrogenated over solid catalysts because the catalyst and even the whole oven soon became choked by solid precipitates of high-molecular-weight carbon compounds, which could not be dissolved away or broken down. The experiments reported here investigated whether a pure filtrate of the extract, or even cokery pitch, could be used to overcome the difficulties. The conclusion was that neither of these substances could work any better over solid catalyst. (The catalyst used was K534.) However, the report recalled that other experiments had shown that coal extract, and even more preferably, coal itself, could be hydrogenated in the liquid phase using finely-ground catalyst mixed into the liquid material, and that filtered ash-free pastes of low-temperature-carbonization pitch could be successfully hydrogenated over solid catalysts.

• Research Organization: Ruhroel, G.m.b.H., Bottrop (Germany)
• OSTI ID: 7220569
• Report Number(s): TOM-7-710-714
• Country of Publication: United States
• Language: German

Related Subjects

01 COAL, LIGNITE, AND PEAT
010403* -- Coal & Coal Products-- Hydrogenation-- (-1987)
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CATALYSTS
CHEMICAL REACTIONS
COAL EXTRACTS
COAL LIQUEFACTION
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGENATION
INTERFERING ELEMENTS
LIQUEFACTION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PITCHES
PRECIPITATION
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES