RATES OF REACTION BETWEEN THE NITRATE RADICAL AND SOME UNSATURATED ALCOHOLS

Rate coefficients for nitrate radical pas-phase reactions with prop-2- en-1-ol (allyl alcohol). but-1-en-3-ol, and 2-methylbut-3-en-2-ol have been determined. Both absolute (fast now discharge with diode laser d etection of NO3) and relative (batch reactor and FTIR spectroscopy) ra te techniques were used to measure the rate coefficients. The rate coe fficients at 294 K are: (1.3 +/- 0.2) x 10(-14), (1.2 +/- 0.3) x 10(-1 4), and (2.1 +/- 0.3) x 10(-14) cm(3) molecule(-1) s(-1) for prop-2-en -1-ol, but-1-en-3-ol, and 2-methylbut-3-en-2-ol, respectively The acti vation energy for reaction of NO3 with prop-2-en-1-ol was determined t o 2.8 +/- 2.5 kj mol(-1) in the temperature range between 273 and 363 K. The atmospheric importance of unsaturated alcohols and structure-re activity considerations are also discussed. (C) 1996 John Wiley & Sons , Inc.