Now showing items 1-10 of 202
Study of utilization of petrol engine equipped with exhaust gas recirculation (EGR) and catalytic converter to reduce consumption and NOx emission
Study of consumption rate and gaseous pollutant emission from engine tests simulating real work conditions, using spark point manually controlled and exhaust gas recirculation (EGR) in diverse proportion levels. The objective ...
Alternative designs for a catalytic converter operating under autothermal conditions
(Pergamon-Elsevier Science Ltd, 2000-06)
This paper focuses on the study of two different autothermal designs of a catalytic combustor, based on natural gas oxidation for heat generation. The feed is preheated by means of two different alternatives: (a) indirect ...
PGEs and other traffic-related elements in roadside soils from Sao Paulo, Brazil
(Elsevier Science BvAmsterdamHolanda, 2005)
Optimization of the flow in the catalytic converter of internal combustion engines by means of screens
(ASME-AMER SOC MECHANICAL ENG, 2008)
The flow in the automotive catalytic converter is, in general, not uniform. This significantly affects cost, service life, and performance, in particular, during cold startup. The current paper reports on a device that ...
Real time optimization (RTO) with model predictive control (MPC)
(PERGAMON-ELSEVIER SCIENCE LTD, 2010)
This paper studies a simplified methodology to integrate the real time optimization (RTO) of a continuous system into the model predictive controller in the one layer strategy. The gradient of the economic objective function ...
Catalytic pyrolysis of cellulose employing MCM-41 type catalysts
(Elsevier Science, 2016-01)
The pyrolysis of microcrystalline cellulose in contact with MCM-41 and Fe−, Al− and Cu− substituted samples was carried out at 400◦C in a fixed-bed glass reactor in order to obtain high bio-oils yields.The acid properties ...
Desulfurization of FCC Gasoline: Novel Catalytic Processes with Zeolites
(Berkeley Electronic Press, 2008-01)
New regulations aim to achieve a drastic sulfur emission reduction in fuels and impose very low sulfur concentration caps (30 ppm in gasoline and 15 ppm in diesel) that will be in full force in 2009. FCC gasoline represents ...
Catalytic degradation of high density polyethylene over microporous and mesoporous materials
(Elsevier Science, 2005-06)
High-density polyethylene (HDPE) was converted to a mixed of lower and higher hydrocarbons over micro (ZSM-11 zeolite with MEL structure) and mesoporous (MCM-41) modified materials. The main liquid hydrocarbons (LHC) were: ...