In the present study, the catalytic wet oxidation of pharmaceutical sludge by molecular sieve loaded with Cu/Ce as catalyst was investigated. Experiments were performed in an experimental batch reactor. Reaction parameters including catalyst dose, temperature, time, and oxygen pressure were discussed. The results showed that the catalysts prepared by co-precipitating method have good catalytic ...

In this review the most important results achieved in recent 12–15 years are summarized focusing on heterogenous catalytic hydrogenations over transition metals (Pd, Pt, Ru, Rh, La), as well application of palladium, copper and other a molecular sieve (4A) support several organic chemical syntheses liquid phase.

The modern sieve method began from Brun’s fundamental work in 1915. This remained the dominant work until 1941 when Ju. V. Linnik expanded on the sieve method. In 1947, A. Selberg advanced the sieve method by using his upper bound sieve. His sieve weights, are fundamentally different from Brun’s thus he brought a structural change into the sieve method. The linear sieve was developed by Rosser ...

Natural gas consumption has grown from 5.0 trillion cubic feet (TCF) in 1949 to 27.0 TCF in 2014 and is expected to be ;31.6 TCF in 2040. This large demand requires an effective technology to purify natural gas. Nitrogen is a significant impurity in natural gas and has to be removed since it decreases the natural gas energy content. The benchmark technology to remove nitrogen from natural gas i...

The gas SF6 has become of interest as a negative ion drift gas for use in directional dark matter searches. However, as for other targets in such searches, it is important that radon contamination can be removed as this provides a source of unwanted background events. In this work we demonstrate for the first time filtration of radon from SF6 gas by using a molecular sieve. Four types of sieves...

Grapevine can be severely affected by phytoplasmas, which are phytopathogenic Mollicutes invading the sieve elements of the host plant. The biochemical and molecular relationships between phytoplasmas and their hosts remain largely unexplored. Equally unknown is an interesting aspect of the pathogen-plant interaction called "recovery," which is a spontaneous remission of symptoms in previously ...

We describe an approach to automatic parallelisation of programs written in Sieve C++ (Codeplay’s C++ extension), using the Sieve compiler and runtime system. In Sieve C++, the programmer encloses a performance-critical region of code in a sieve block, thereby instructing the compiler to delay sideeffects until the end of the block. The Sieve system partitions code inside a sieve block into ind...

Tubular supported carbon molecular sieve membranes (CMSMs) with high hydrophilicity and perm-selectivities for water suitable ethanol dehydration were developed from a Novolac oligomer phenolic resin as precursor. Alpha alumina CMSMs resulted in 1.69 times higher surface roughness than zirconia supports. The 48% selective layer thickness. According to pervaporation results, permeance decreased ...