|
Từ khóa:
|
Carbon nanotubes, Carboxyl groups, CO oxidation, Copper cluster, Reaction inhibition
|
|
Danh mục:
|
ScienceDirect - Springer - Bookboon...
|
|
Môn học:
|
(E-journals) ScienceDirect - Springer - Bookboon...
|
|
Tóm tắt theo nội dung:
|
An inhibition of CO oxidation on catalytically active pristine multi-walled carbon nanotubes (MWCNT) in thepresence of selected pollutant constituents influe gas streams was studied. We simulated an interaction betweenthe active MWCNT and the contaminants in CO oxidation atmosphere of: (i) an acidic wetflue gas environmentmodelled by using MWCNT grafted with carboxyl (eCOOH) groups; and (ii) a polluted environment formed bytrace metal copper particles and other contaminant constituents (e.g. PAHs, VOCs and P) by using a coppercluster of chemical formulae [(PPh3)CuH]6·0.75THF as a model pollutant, doped on the MWCNT. The pristine,unmodified MWCNT were catalytically active from∼150 °C, whilst the carboxyl-modified MWCNT behaved asan adsorbent of CO molecules without converting them into CO2. The copper cluster was found to have formedCuCO3during the CO oxidation reaction at temperatures below 330 °C but decomposed above 400 °C to releaseCO2produc
|