Ga sub 2 O sub 3 /HZSM-5 propane aromatization catalysts: Formation of active centers via solid-state reaction

Journal Article · Thu Nov 01 00:00:00 EST 1990 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(90)90065-R· OSTI ID:5750438

Price, G L ^[1]; Kanazirev, V ^[2]

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1. Louisiana State Univ., Baton Rouge (USA)
2. Bulgarian Academy of Sciences (Bulgaria)

An active and very selective catalyst for propane conversion to aromatics near atmospheric pressure and 750-850 K is formed by ball-milling 2-10 wt% Ga as Ga{sub 2}O{sub 3} with HZSM-5 followed by hydrogen reduction at about 850 K for 2 h. Microbalance TPR experiments and X-ray diffraction studies along with catalytic testing have helped establish that the intimate physical mixture of Ga{sub 2}O{sub 3} with HZSM-5, the acidity of the zeolite, and the hydrogen reduction are all necessary to generate the highly active form of the catalyst. The active species is probably Ga(I) as a zeolitic cation and is not incorporated in the zeolite lattice.

• OSTI ID: 5750438
• Journal Information: Journal of Catalysis; (USA), Vol. 126:1; ISSN 0021-9517
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
GALLIUM OXIDES
CATALYTIC EFFECTS
PROPANE
AROMATIZATION
ZEOLITES
ATMOSPHERIC PRESSURE
CATALYST SUPPORTS
CHEMICAL PREPARATION
MIXTURES
REDUCTION
TEMPERATURE CONTROL
TEMPERATURE DEPENDENCE
X-RAY DIFFRACTION
ALKANES
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
CONTROL
DIFFRACTION
DISPERSIONS
GALLIUM COMPOUNDS
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SCATTERING
SYNTHESIS
020400* - Petroleum- Processing