Compared with the rapid deactivation of Pd/AC catalyst, an eco-friendly Pd-[DBU][Cl]/AC ([DBU][Cl], 1,8-diazabicyclo[5.4.0]undec-7-ene hydrochloride) catalyst enhanced stability was synthesized and applied in hydrochlorination acetylene. The Pd-20[DBU][Cl]/AC exhibits 96.7% acetylene conversion 98.9% selectivity vinyl chloride within 24 h evaluation under conditions T = 180 °C, GHSV(C2H2) 360 h...

12 Benthic nitrogen (N2) fixation and sulfate reduction (SR) were investigated in the Peruvian 13 oxygen minimum zone (OMZ). Sediment samples, were retrieved by a multiple corer at six 14 stations (70 1025 m water depth) along a depth transect at 12°S, covering anoxic and 15 hypoxic bottom water conditions. Benthic N2 fixation was detected at all sites using the 16 acetylene reduction assay, wi...

Benzofurazane has been attached to nucleosides and dNTPs, either directly or through an acetylene linker, as a new redox label for electrochemical analysis of nucleotide sequences. Primer extension incorporation of the benzofurazane-modified dNTPs by polymerases has been developed for the construction of labeled oligonucleotide probes. In combination with nitrophenyl and aminophenyl labels, we ...

The pre-steady-state absorbance changes that occur during the first 0.6 s of reaction of the nitrogenase of Klebsiella pneumoniae can be simulated by associating redox changes with the different states of the MoFe protein described by our published kinetic model for nitrogenase [Lowe and Thorneley (1984) Biochem. J. 224, 877-886]. When the substrate is changed, from H+ to C2H2 (acetylene) or N2...