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Figure 1


Table II Oxidation of propene: Effect of adding acetaldehyde on product selectivities in CSTR flow system. Simulated results in parenthesis. Species not included in the reaction scheme are indicated by an asterisk.

 
 			C3H6/O2/N2	C3H6/O2/N2/CH3CHO		C3H6/O2/N2	C3H6/O2/N2/CH3CHO
 (%)			56.1/7.1/36.8	61.0/7.0/30.2/1.8		34.2/5.1/60.7	34.0/4.6/60.0/1.4
 
 Pressure (bar)		15.6		15.7				53.5		54.5
 
 Residence time (s)	50		100				30		36
 
 Temperature (K)	541(549)	522(529)			527(553)	505(540)
 
 Reactor volume (dm3)	2.0		2.0				1.0		1.0
 
 
 CO			12.8(5.6)	13.8(4.9)			9.0(4.5)	4.9(4.6)
 
 CO2			10.1(8.3)	8.6(11.2)			9.9(8.8)	9.7(12.2)
 
 HCHO			3.6(9.8)	3.4(6.7)			6.2(8.1)	6.0(5.7)
 
 HCO2H			2.0(1.1)	2.0(1.2)			1.1(1.8)	0.4(1.4)
 
 CH3OH			4.7(2.3)	5.8(4.1)			2.8(2.0)	7.4(4.4)
 
 
 CH3CHO			15.9(11.3)	1.2(-7.5)			16.7(8.8)	0.6(-13.5)
 
 C3H6O			32.9(37.9)	41.0(45.1)			31.9(39.4)	45.4(47.5)
 
 C3H6O derivativesa	7.7		12.3				7.0		7.7
 
 C2H3CHO + C2H5CHO	3.6(0.5)	2.3(0.4)			4.0(0.3)	6.0(0.3)
 
 CH3COCH3		1.6*		1.1*				2.0*		3.3*
 
 C3H5OH			3.8(2.4)	5.4(3.3)			4.1(3.4)	4.1(3.6)
 
 methyl formate		0.3*		1.2*				0.8*		1.4*
 
 CH4 			0.0(0.06)	0.0(0.2)			0.0(0.08)	0.0(0.2)
 
 1,5-C6H10		0.5(3.5)	1.2(2.9)			0.8(2.9)	1.4(2.0)
 
 total peroxides	0.3(15.0)	0.4(21.0)			3.3(17.4)	1.0(23.2)
 
 other			0.2(2.2)	0.3(6.6)			0.4(2.5)	0.7(8.5)
 
 
 d[O2]/[O2] (%)		73(73)		70(70)				72(72)		70(70)
 
 
 d[C3H6]/[C3H6] (%)	5.8(7.3)	7.1(6.0)			6.6(8.5)	5.1(7.8)
 
a C3H6O derivatives are thought to be formed in the condensed phase from propene oxide produced in the gas phase


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