@article{822ec0a92b8d45b1935642441c820121,
title = "Correlating the degree of metal-promoter interaction to ethanol selectivity over MnRh/CNTs CO hydrogenation catalysts",
abstract = "Multi-walled carbon nanotubes (MCNTs) were used as a support for Rh-based catalysts for high pressure (20 bar) CO hydrogenation. 3 wt% Rh/CNTs catalysts were loaded with 1 wt% and 2 wt% Mn promoter, respectively, in order to study the effect of metal-promoter interactions for ethanol synthesis. Both STEM and EXAFS results showed ∼1 nm Rh particles in promoted as well as the unpromoted catalysts, STEM and EELS results verified the enhanced metal-promoter interaction when the amount of Mn promoter increased from 1 wt% to 2 wt%. The enhancement in the degree of metal-promoter interaction leads to an increase in the ethanol selectivity. Moreover, due to the nature of CNTs (low Z number), the Mn-Rh interactions could be observed at atomic resolution during the STEM-EELS characterization, and the promoter phase is confirmed as Mn(II) oxide by XANES and EELS.",
keywords = "Alcohol synthesis, CO hydrogenation, Carbon nanotubes, Manganese promoter, Rhodium, STEM-EELS",
author = "Jingjing Liu and Zhao Guo and David Childers and Neil Schweitzer and Marshall, {Christopher L.} and Klie, {Robert F.} and Miller, {Jeffrey T.} and Meyer, {Randall J.}",
note = "Funding Information: RJM, JJL and RFK would like to acknowledge financial support by National Science Foundation ( CBET-1067020 ). Funding for JTM and CLM has been provided by the Institute for Atom-Efficient Chemical Transformation (IACT), an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences. Use of the Advanced Photon Source is supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract DE-AC02-06CH11357, MRCAT operation are supported by the Department of Energy and the MRCAT member institutions . We thank Guanghui Zhang from Wuhan university for his help on Rh 2 O 3 XANES spectrum calibration. We also thank Dr. Haojuan Wei, Dr. Michael Schwartz, Dr. Richard Pauls, and Dr. Robert McCoy at Argonne National Lab for their discussion, help and advice while constructing the high pressure CO hydrogenation reactor. The UIC JEOL JEM-ARM200CF is supported by an MRI-R2 grant from the National Science Foundation (Grant No. DMR-0959470 ). Support from the UIC Research Resources Center is acknowledged.",
year = "2014",
month = may,
doi = "10.1016/j.jcat.2014.03.002",
language = "English (US)",
volume = "313",
pages = "149--158",
journal = "Journal of Catalysis",
issn = "0021-9517",
publisher = "Academic Press Inc.",
}