Active Reaction Control of Cu Redox State Based on Real-Time Feedback from In Situ Synchrotron Measurements
- Columbia Univ., New York, NY (United States)
- Stony Brook Univ., NY (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Columbia Univ., New York, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
We achieve a target material state by using a recursive algorithm to control the material reaction based on real-time 6 feedback on the system chemistry from in situ X-ray absorption spectroscopy. Without human intervention, the algorithm controlled 7 O2:H2 gas partial pressures to approach a target average Cu oxidation state of 1+ for γ-Al2O3-supported Cu. This approach 8 represents a new paradigm in autonomation for materials discovery and synthesis optimization; instead of iterating the parameters 9 following the conclusion of each of a series of reactions, the iteration cycle has been scaled down to time points during an individual 10 reaction. Application of the proof-of-concept illustrated here, using a feedback loop to couple in situ material characterization and 11 the reaction conditions via a decision-making algorithm, can be readily envisaged in optimizing and understanding a broad range of 12 chemical systems including catalysts.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Stony Brook Univ., NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC05-00OR22725; SC0019212
- OSTI ID:
- 1775224
- Alternate ID(s):
- OSTI ID: 1774330
- Journal Information:
- Journal of the American Chemical Society, Vol. 142, Issue 44; ISSN 0002-7863
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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