Investigation of Cu Species in Dealuminated Beta Zeolite Studied by Operando Closed-Cell Gas Reaction STEM

Journal Article · 22 July 2023 · Microscopy and Microanalysis

DOI:https://doi.org/10.1093/micmic/ozad067.829· OSTI ID:2000018

Unocic, Kinga A.; Purdy, Stephen C.; Allard, Lawrence F.; Collinge, Gregory B.; Zhang, Junyan; Borate, Shivangi N.; Wu, Qiyuan; Wegener, Evan C.; Samad, Noho "River"; Habas, Susan; Krause, Theodore R.; Harris, James W.; Lee, Mal-Soon; Glezakou, Vassiliki A.; Rousseau, Roger; Sutton, Andrew D.; Li, Zhenglong

Direct conversion of ethanol to C3+ olefins is an attractive pathway to produce sustainable aviation fuels [1]. We recently reported a copper-containing catalyst supported on dealuminated (DeAl) beta zeolite that is capable of catalyzing cascade ethanol to olefins reactions with high olefins selectivity (88% C3+ olefin selectivity at 100% ethanol conversion). However, one of the deactivation mechanisms of the catalyst is copper sintering [2]. It was found that copper agglomerates can be redispersed through a simple oxidative treatment. To better understand the kinetics and process conditions conducive to redispersion, we studied the atmosphere and temperature dependent Cu species in Cu/DeAl-Beta catalyst under conditions matching those of the working catalyst.

• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 2000018
• Report Number(s): NREL/JA-5100-87467; MainId:88242; UUID:812bbf62-abb9-4c2e-8d35-701b7e2e7e4a; MainAdminID:70582
• Journal Information: Microscopy and Microanalysis, Vol. 29, Issue Supplement 1
• Country of Publication: United States
• Language: English

Related Subjects

BIOMASS FUELS,INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
beta zeolite
dealumination
sustainable aviation fuels