In general terms, BFRs are a controversial group of chemicals. Flame retardants protect lives by increasing fire safety, but at the same time, several of the BFRs are regarded as concerning environmental contaminants. These include polybrominated diphenyl ethers (PBDEs), tetrabromobisphenol A (TBBPA) and hexabromocyclododecane (HBCD). The reasons for concern about BFRs are observed or suspected...

Bridging the gap between catalysis and reaction engineering during kinetic analysis of oxidative dehydrogenation ethane over a highly active selective Ni-based material.

The geometric parameters of the mol-ecule of the title compound, C(14)H(16)O(2)P(2), are in the usual ranges. It is a meso compound with the two chiral P atoms having opposite configurations. The P-CH(2)-CH(2)-P chain adopts a trans conformation [torsion angle -178.59 (17)°]. The P=O bonds are almost coplanar with the adjacent phenyl ring [torsion angles = 3.8 (3) and 0.3 (3)°]. Whereas one of ...

CO2 plays the most important role in pollution due to greenhouse gases, which causes global warming and climate change. Unfortunately, CO2 emission has increased significantly in recent decades. So, it is crucial to capture CO2. On the other hand, CO2 can be utilized for commercial products. There is plenty of CO2 utilization such as enhanc...

Three novel alkyl sulfone bridged phosphorus (P) compounds namely 6,6′-(sulfonylbis(ethane-2,1-diyl))bis(dibenzo[c,e][1,2]oxaphosphinine 6-oxide) (SEDOPO), sulfonylbis(ethane-2,1-diyl))bis(diphenylphosphine oxide) (SEDPPO), and tetraphenyl (sulfonyl bis(ethane-2,1-diyl)) bis(phosphonate) (SEDPP) (i.e. phosphine oxide, phosphinate phosphonate, respectively) were synthesized via a Michael additio...

The synthesis of two novel catalytic materials based on vanadium mixed oxides has been described in present study. first material was a Vanadium-Phosphorous oxide (VPO) carbon-supported with fibrous morphology and very high surface area, stable under oxidizing conditions up to 350 °C. other is bulk VPO structure obtained after optimizing the calcination supported carbon fiber catalyst, which pr...