Toxicity of propylene oxide alone and in combination with low pressure or carbon dioxide against life stages of Ephestia cautella (Walker) (Lepidoptera: Pyralidae) under laboratory conditions

2017 ◽  
Vol 98 ◽  
pp. 56-60 ◽  
Author(s):  
Ali A. Isikber ◽  
Hasan Tunaz ◽  
Christos G. Athanassiou ◽  
Yeter Bilgili ◽  
M. Kubilay Er
Keyword(s):  
Carbon Dioxide ◽  
Propylene Oxide ◽  
Low Pressure ◽  
Ephestia Cautella ◽  
Life Stages ◽  
Laboratory Conditions ◽  
Lepidoptera Pyralidae

The effect of nitrogen and carbon dioxide on eggs of Ephestia cautella (Walker) and E. kuehniella Zeller (Lepidoptera: Pyralidae)

1980 ◽  
Vol 70 (2) ◽  
pp. 293-298 ◽  
Author(s):  
C. H. Bell ◽  
E. C. Spratt ◽  
D. J. Mitchell
Keyword(s):  
Carbon Dioxide ◽  
Toxic Effect ◽  
Ephestia Cautella ◽  
Percentage Survival ◽  
Lepidoptera Pyralidae

AbstractSome eggs of Ephestia cautella (Wlk.) and E. kuehniella Zell. hatched after exposure to near 100% atmospheres of nitrogen (N2) or carbon dioxide (CO2) for up to 5 days at 15°C, 3 days at 20°C and 1 day at 25°C. The most tolerant age at the start of treatment at 25°C in E. cautella was 7–24 h after oviposition for CO2 and 7–30 h for N2. Generally, hatch was lower in CO2 than in N2 whatever the exposure, and lower for E. kuehniella than for E. cautella. Considerably more eggs of E. cautella aged 30 and 42 h hatched after exposure to N2 than to CO2, showing a toxic effect of CO2 in the absence of oxygen. Eggs of both species treated with either CO2 or N2 hatched 1–2 days later than controls, regardless of age or percentage survival.

Toxicity of Propylene Oxide at Low Pressure Against Life Stages of Four Species of Stored Product Insects

2004 ◽  
Vol 97 (2) ◽  
pp. 281-285 ◽  
Author(s):  
Ali A. Isikber ◽  
Shlomo Navarro ◽  
Simcha Finkelman ◽  
Miriam Rindner ◽  
Avi Azrieli ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Low Pressure ◽  
Life Stages ◽  
Stored Product Insects

Chiral salenCo(iii) complexes with bulky substituents as catalysts for stereoselective alternating copolymerization of racemic propylene oxide with carbon dioxide and succinic anhydride

2021 ◽  
Vol 12 (12) ◽  
pp. 1776-1786
Author(s):  
Zhou Wang ◽  
Ying Mu
Keyword(s):  
Carbon Dioxide ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
Succinic Anhydride ◽  
Poly Propylene ◽  
Alternating Copolymerization

Stereoregular poly(propylene carbonate)s and poly(propylene succinate-block-carbonate)s were synthesized with new chiral salenCo(iii) catalysts carrying bulky substituents.

Very low-pressure pyrolysis of chloroethane-2,2,2-d3. Kinetics of hydrochloric acid-d elimination and the effect of carbon dioxide inert bath gas

1981 ◽  
Vol 85 (26) ◽  
pp. 4106-4108 ◽  
Author(s):  
Joseph S. Francisco ◽  
Jeffrey I. Steinfeld ◽  
Keith D. King ◽  
Robert G. Gilbert
Keyword(s):  
Carbon Dioxide ◽  
Hydrochloric Acid ◽  
Low Pressure ◽  
Kinetics Of

scholarly journals Tertiary Amines Paired with Trialkyl Boranes: A Simple Organocatalyst for Fully Alternating Copolymerization of Carbon Dioxide and Propylene Oxide

2020 ◽  
Author(s):  
Xing-Hong Zhang
Keyword(s):  
Carbon Dioxide ◽  
Small Molecules ◽  
Propylene Oxide ◽  
Average Molecular Weight ◽  
Tertiary Amines ◽  
Carbon Dioxide Co2 ◽  
Poly Propylene ◽  
Alternating Copolymerization ◽  
Completely Alternating ◽  
Huge Challenge

Metal-free synthesis of fully alternating polycarbonates from carbon dioxide (CO2) and epoxides is highly desired but a huge challenge. Here, we disclose the combination of tertiary amines with trialkyl boranes for completely alternating copolymerization of CO2 with epoxides. Triethylamine (TEA) pairing with triethyl borane (TEB), the simplest catalyst for the copolymerization of CO2 and propylene oxide (PO), afforded fully alternating poly(propylene carbonate) (PPC) with a turnover frequency (TOF) of 54 h-1 at 60 oC. Remarkably, diamine such as, N,N,N',N'-tetraethylethylenediamine (TEED) and triamine such as N,N,N',N'',N''-pentamethyldiethylene triamine (PMDETA) pairing with TEB exhibited improved the copolymer selectivity of up to 99%. Supplementally, the effect of trialkylborane structure on the copolymerization were also investigated. Moreover, PPCs prepared from these tertiary amines/ trialkyl boranes Lewis pairs showed the head-to-tail diad content of around 80%. The number-average molecular weight of PPC was up to 56.0 kg/mol with narrow distribution (Đ =1.16) and could be easily adjusted by simply varying the feeding ratios. The 1H NMR spectra and MALDI-TOF-MS spectra suggest that both tertiary amine-activating CO2 and TEB-masked end anions cooperatively promote the fully alternating CO2/epoxide copolymerization. This work provides an organocatalytic platform for well-defined CO2/epoxide copolymers using simple small molecules with high atomic utilization.<br>

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