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Nanophase calcia-doped-ceria-based washcoats with the molar composition (CeO) 0.25 (CaO) 0.02 (Al 2 O 3 ) 0.73 /(Pd, Rh), deposited on ceramic honeycombs via sol–gel methods were evaluated with respect to catalytic activity for hydrocarbons conversion and thermal aging. With the proper...
Catalytic combustion of methyl- tert -butyl-ether (MTBE) was studied in the gas-phase from an aqueous solution spiked with MTBE (1.1 mM), to simulate actual remediation conditions. The solution of MTBE was sparged with an oxygen/helium gas, at a ratio of 1–4. The sparged gas stream of MTBE and...
The key to meeting the requirements of ever-tightening emission standards is improving the efficiency of exhaust conversion during cold-start. In order to reach the aim, a new method using microwave-heated catalysts is proposed in this paper. Preliminary testing results show that the three-way...
The 0.3%Pd/Al 2 O 3 -La 2 O 3 (0, 6 and 15 wt.% La 2 O 3 ) catalysts prepared by the sol–gel method were studied by N 2 physisorption, X-ray diffraction (XRD), small angle X-ray scattering (SAXS), and temperature-programmed reduction (TPR). The catalysts were tested in the reduction of NO by H...
While the use of selective additives and catalysts might be the most economical and easiest solution for refinery operations in reducing the sulfur concentration in catalytic cracked naphtha their effectiveness is still limited. A better knowledge on the chemistry of sulfur compounds under...
Pt (0.1 wt.%) on Al 2 O 3 , TiO 2 , and MgO supports were used for the low temperature combustion of methanol in both the absence and the presence of ammonia. Without NH 3 in the gas the performance for the complete combustion decreases in the order Pt/MgO≥Pt/TiO 2 ⪢Pt/Al 2 O 3 comparing a...
The reduction of polychlorinated biphenyls (PCB) emissions to the environment are contemporary issues of global efforts. Within this goal, the destruction of PCB is a challenge also for applied catalysis, in particular with respect to the destruction of PCB waste and the off-gas cleaning of...
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