Ammonia evolution from western and eastern oil shales

Conference · Wed Mar 01 04:00:00 EST 1989 · American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA)

OSTI ID:6820592

Oh, M S; Crawford, R W; Foster, K G; Alcaraz, A ^[1]

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1. Lawrence Livermore National Lab., CA (USA)

The authors measured the real-time evolution of ammonia from two Green River formation oil shales and one Eastern US Devonian oil shale. The ammonia from Green River Formation oil shales has two distinct peaks, while the New Albany oil shale has one broad peak maximizing at a high temperature. The gas phase reactions, such as ammonia decomposition, play an important role at high temperatures for all three oil shales. Heating AP24 under steam released 3.5 times more ammonia than under argon. For Green River Formation Oil shales, the high temperature peak is due to NH{sub 3} from the decomposition of heterocyclic organic N-compounds and Buddingtonite, and the contribution of organic N is significant. The catalytic sites for decomposition reactions seem to be predominantly on the surface of retorting particles and the effect of the reactor wall was small. It is probable that the yield increase in steam is due to inhibition of NH{sub 3} decomposition and also due to the additional yields of NH{sub 3} by steam reacting with organic N species. Future work will be directed to monitoring the evolution of other N-volatiles such as HCN and N{sub 2} and also continuing the study of ammonia with improved experimental techniques.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6820592
• Report Number(s): CONF-8904125--
• Conference Information: Journal Name: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA) Journal Volume: 34:1
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040500* -- Oil Shales & Tar Sands-- Properties & Composition
AMMONIA
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CATALYTIC EFFECTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGIC FORMATIONS
GREEN RIVER FORMATION
HYDRIDES
HYDROGEN COMPOUNDS
MATERIALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OIL SHALES