Effect of lead monoxide on the combustion behaviour of oxygen derivatives of hydrocarbons

✍ Scribed by K.C. Salooja

• Publisher: Elsevier Science
• Year: 1967
• Tongue: English
• Weight: 628 KB
• Volume: 11
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(67)90052-1

✦ Synopsis

p.o. Box i. Chester

In contrast to its inhibiting ¢11"¢¢t or the combustion of hydroc;~rbons, lead monoxide strongly promotes the combustion of oxygen derivatives of hy~L,'ocarbons which contain c:trbonyl and/or hyd,'oxyl groups, It markedly lowers the temperature ;it which oxidation commences, greatly increases the extent of reaction, and causes carbon dioxide to form in far greater amounts than c, rbon monoxide, Whereas lead monox:dc undergoes hardly any change in the cour~ of its inhibiting effect, during promotion it is ~¢duced to lead in the combustion ot' acetic acid, ;ic¢lic anhydride and form,lldehyde. However, it is not reduced in the course of its promoting effect on acetone and methyl acet;ite where instead it glows and sinters, With methanol both these effects occur concurrently, a faint glow appear.,, on the surface of the lead oxide and some reduction occurs beneath t11e surface. The observations throw fresh light on the mechanism of anti.knock and pro-knock effects of lead alkyls in gasoline engines. Mechanisms are proposed to expl,'lin the results.