Isolated molybdate species supported on silica are reported to have the highest specific activity and selectivity for the direct oxidation of methane to formaldehyde. The present investigation was undertaken to understand the elementary redox processes involved in the formation of formaldehyde over such species. A MoO(x)/SiO(2) catalyst was prepared with a Mo loading of 0.44 Mo/nm(2). On the ba...

The specific glucocorticoid binding capacity in cytosol preparations of rat thymocytes decays with a half-life of 4 h at 0 degrees C or 20 min at 25 degrees C. Phosphatase inhibitors (molybdate, fluoride, glucose 1-phosphate) added alone do not prevent this inactivation. Dithiothreitol (2 mM) has a large stabilizing effect on the binding capacity at 0 degrees C but only a small effect at 25 deg...

The effects of vanadate, molybdate, and azide on ATP phosphohydrolase (ATPase) and acid phosphatase activities of plasma membrane, mitochondrial, and soluble supernatant fractions from corn (Zea mays L. WF9 x MO17) roots were investigated. Azide (0.1-10 millimolar) was a selective inhibitor of pH 9.0-ATPase activity of the mitochondrial fraction, while molybdate (0.01-1.0 millimolar) was a rela...

Two years ago, a modification (1) of the Bell-Doisy phosphate method was published and at that time technique ‘was given for its application to inorganic phosphorus in blood and urine. Since then its use has been extended to a variety of analytical procedures, some of which are given below. In principle the method consists of the formation of phosphomolybdic acid and its subsequent reduction by...

Bacteria with the ability to tolerate, remove, and/or degrade several xenobiotics simultaneously are urgently needed for remediation of polluted sites. A previously isolated bacterium with sodium dodecyl sulfate- (SDS-) degrading capacity was found to be able to reduce molybdenum to the nontoxic molybdenum blue. The optimal pH, carbon source, molybdate concentration, and temperature supporting ...

BACKGROUND Sodium chlorate (NaClO3) is extensively used in the paper industry, but its production uses strictly regulated highly toxic Na2Cr2O7 to reach high hydrogen evolution reaction (HER) Faradaic efficiencies. It therefore important find alternatives either replace or reduce concentration. RESULTS The concentration can be significantly reduced by using Na2MoO4 as an electrolyte co-additive...

Iron molybdate catalysts were prepared using a sol gel route with malonic acid and oxalic their performance for the selective oxidation of methanol to formaldehyde was evaluated.

Cyanobacterial mats are laminated microbial ecosystems which occur in highly diverse environments and which may provide a possible model for early life on Earth. Their ability to produce hydrogen also makes them of interest from a biotechnological and bioenergy perspective. Samples of an intertidal microbial mat from the Elkhorn Slough estuary in Monterey Bay, California, were transplanted to a...

Gadolinium molybdate is a classical example of an improper ferroelectric and ferroelastic material. It established that the spontaneous polarization arises as secondary effect, induced by structural instability in paraelectric phase, which leads to unit cell doubling formation polar axis. However, previous x-ray diffraction (XRD) studies on gadolinium have been restricted limited ability includ...