BASF Catalysts is supplying selective catalytic reduction (SCR)
technology for Beijing transit buses that will be the first in
mainland China to meet Euro IV emission standards. About 450
of the specially equipped buses will be on Beijing streets by the
end of 2007, with an additional 600 buses scheduled for 2008. The
SCR systems are projected to cut NOx (nitrogen oxides) emissions
from the buses by more than 60%.
Beijing’s transport authorities have announced that they will
phase out thousands of older diesel buses and replace most of them
with buses that meet Euro IV emission standards before the 2008
Olympic Games.
“We are excited to be part of China’s historic efforts to reduce
vehicle pollution in Beijing,” said Luna Song, Regional Sales
Manager, BASF Catalysts, “All eyes will be on the city during next
summer’s Olympic Games and we’re proud to play a role in cleaning
the air.”
BASF’s SCR catalysts are currently being incorporated into
6.5-liter and 8.4-liter diesel engines made by Yuchai Machinery
Corporation, the largest engine manufacturer in China. BASF worked
closely with Yuchai to develop the most cost-effective SCR system
to deliver the needed NOx reduction.
SCR is one of several technology platforms BASF has developed to
meet the significant growing demand for emission-control
technologies resulting from the phase-in of more stringent
heavy-duty diesel regulations worldwide. The SCR catalyst comprises
a catalytically active component coated on a ceramic
honeycomb. When a reductant, such as AdBlue® urea by BASF, is
added to the system, the catalyst promotes a chemical reaction that
converts NOx into water and nitrogen.
BASF Catalysts originally pioneered SCR technology in the late
1960s for stationary-source applications such as power-generating
and industrial manufacturing facilities. The company continues
to be a major supplier to the stationary-source market.
Learn more about the Beijing bus technology
here.