Reduction of nitrogen oxide emissions using nickel-copper alloy catalyst in diesel engines

Abstract

<span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:arial;mso-ansi-language:en-us;mso-fareast-language:="" en-us;mso-bidi-language:ar-sa"="">Results of experiments conducted for the reduction of NO_xin diesel engine exhaust using nickel copper alloy, marketed under the name Monel, are reported. At temperatures above 600 K, and space velocities up to 40000 h^-1, Monel is found to reduce about 70% of NO_xin diesel engine exhaust. Monel in wire form, have been used for minimized swelling effect and thereby increasing its life, as the catalyst life is limited by physical deteriorations of catalyst, which causes increase in exhaust back pressure. Study on warm up characteristics of the catalyst system show rapid bed warm-up and possible reduction in catalyst mass without affecting the NO_x reduction performance.</span>