OH-initiated photooxidations of 1-pentene and 2-methyl-2-propen-1-ol: mechanism and yields of the primary carbonyl products.

OH-initiated photooxidations of 1-pentene and 2-methyl-2-propen-1-ol: mechanism and yields of the primary carbonyl products.

Chemphyschem : a European journal of chemical physics and physical chemistry (2014-09-05)

Silvina A Peirone, Pablo M Cometto, Silvia I Lane

ABSTRAKT

The products of the gas-phase reactions of OH radicals with 1-pentene and 2-methyl-2-propen-1-ol (221MPO) at T=298±2 K and atmospheric pressure were investigated by using a 4500 L atmospheric simulation chamber that was built especially for this work. The molar yield of butyraldehyde was 0.74±0.12 mol for the reaction of 1-pentene. This work provides the first product molar yield determination of formaldehyde (0.82±0.12 mol), 1-hydroxypropan-2-one (0.84±0.13 mol), and methacrolein (0.078±0.012 mol) from the reaction of 221MPO with OH radicals. The mechanism of this reaction is discussed in relation to the experimental results. Additionally, taking into consideration the complex mechanism, the rate coefficients of the reactions of OH with formaldehyde, 1-hydroxypropan-2-one, and methacrolein were derived at atmospheric pressure and T=298±2 K.; the obtained values were (8.9±1.6)×10(-12) , (2.4±1.4)×10(-12) , and (22.9±2.3)×10(-12) cm(3) molecule(-1) s(-1) , respectively.

MATERIAŁY

Numer produktu

Marka

Opis produktu

57551-U

Supelco

SPME Fiber Assembly Kit, Assortment, StableFlex (1 cm), needle size 24 ga, Autosampler, pk of 4

57287-U

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SPME Fiber Assembly Kit, Assortment #4, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3

57284-U

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57286-U

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SPME Fiber Assembly Kit, Assortment #2, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3

57285-U

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SPME Fiber Assembly Kit, Assortment #1, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3

57306

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SPME Fiber Assembly Kit, Assortment #1, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3

57307

Supelco

SPME Fiber Assembly Kit, Assortment #1, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3

241997

Sigma-Aldrich

1-Pentene, 98%

57321-U

Supelco

SPME Fiber Assembly Kit, Assortment #2, Fused Silica (1 cm), size 24 ga, Autosampler, pk of 3

57324-U

Supelco

SPME Fiber Assembly Kit, Assortment #4, Fused Silica (1 cm), size 24 ga, Manual Holder, pk of 3

57550-U

Supelco

SPME Fiber Assembly Kit, Assortment, StableFlex (1 cm), needle size 24 ga, Manual Holder, pk of 4

57320-U

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SPME Fiber Assembly Kit, Assortment #2, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3

57325-U

Supelco

SPME Fiber Assembly Kit, Assortment #4, Fused Silica (1 cm), size 24 ga, Autosampler, pk of 3

76969

Supelco

1-Pentene, analytical standard

76971

Sigma-Aldrich

1-Pentene, ≥98.5% (GC)

57362-U

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SPME Fiber Assembly Kit, Assortment #5, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 4

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57928-U

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SPME Fiber Assembly, 100 μm PDMS, Metal Alloy (1 cm), needle size 23 ga, Autosampler, pk of 1, red hub

705551

Sigma-Aldrich

Hydrogen chloride solution, 3 M in cyclopentyl methyl ether (CPME)

57354-U

Supelco

SPME Fiber Assembly, 60 μm PEG, Metal Alloy (1 cm), needle size 23 ga, Autosampler, pk of 3, purple hub

57294-U

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SPME Fiber Assembly, 85 μm Polyacrylate, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, white hub

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57298-U

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SPME Fiber Assembly, 50/30µm DVB/CAR/PDMS, StableFlex (1 cm), needle size 23 ga, Autosampler, pk of 3, plain gray hub

606758

Sigma-Aldrich

Formaldehyde-¹²C solution, 20% in H₂O, 99.9 atom % ¹²C

57328-U

Supelco

SPME Fiber Assembly, 50/30µm DVB/CAR/PDMS, StableFlex (1cm), needle size 24 ga, Manual Holder, pk of 3, plain gray hub

57335-U

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SPME Fiber Assembly, 85 μm CAR/PDMS, StableFlex (1 cm), needle size 24 ga, Autosampler, pk of 3, light blue hub

57342-U

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SPME Fiber Assembly, 100 μm PDMS, Fused Silica (1 cm), needle size 23 ga, Manual Holder, pk of 3, red hub

57345-U

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