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Vapor-Phase Alkylation
of Benzene to Ethylbenzene
It is estimated that half of the ethylbenzene production
units worldwide have adopted the zeolite-catalyzed vapor-phase alkylation
of benzene to ethylbenzene, instead of the AlCl3-catalyzed
liquid phase process, in terms of its several advantages, such as no
equipment erosion, environmental friendship and energy saving. SRIPT
has spent several years of investment and research manpower in the development
of ABÔ series catalysts for this vapor-phase process since the early 1990s.
AB-96Ô and AB-97Ô catalysts were commercially employed in three Mobil/ Badger-licensed
process plants in China.
Physical Properties
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Main phase:
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ZSM-5 and alumina
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Appearance:
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white pellet
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Size, mm:
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1.5-1.6´2-13
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Bulk density, g/ml:
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0.60~0.64
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Crush strength, N/cm:
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70~80
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Catalyst Performance
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Catalyst
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Tinlet, °C
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Pressure,
MPa
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B/C2=, mol/mol
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C2=
WHSV, hr-1
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C2= conversion
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EB+PEB selectivity
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Cycle length, day
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Service life, y
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AB-96Ô
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411
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2.03
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7.0
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1.65
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99.88
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99.57
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180
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2~3
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AB-97Ô
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388
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1.70
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6.5
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2.19
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99.95
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99.65
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540
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2~3
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