نتایج جستجو برای: vpo catalyst

تعداد نتایج: 44094  

2016
Galip Akay

A novel generic method of silica supported catalyst system generation from a fluid state is presented. The technique is based on the combined flow and radiation (such as microwave, thermal or UV) induced co-assembly of the support and catalyst precursors forming nano-reactors, followed by catalyst precursor decomposition. The transformation from the precursor to supported catalyst oxide state c...

Journal: :European Journal of Echocardiography 2021

Abstract Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main source(s): PN-III-P1-1-TE-2016-0669, within PNCDI III Background Left ventricular non-compaction (LVNC) is associated with an increased risk heart failure (HF). The presence a real LVNC HF preserved ejection fraction (HFpEF), still controverted. Methods We evaluated prospectively 42 patients ...

2008
Kaoru MIYATA Sentaro OZAWA Tatsuya YAMAZAKI Yoshisada OGINO

The activity of a Te-MgO catalyst prepared by adsorbing Te vapor onto MgO powder was determined by dehydrogenation of indane, 9,10-dihydrophenanthrene, cumene, and p-cymene. The activity of the Te-MgO catalyst was higher than that of the MgO catalyst in most of the cases investigated. The selectivity of the former catalyst was much higher than that of the later in all cases studied. The Te-MgO ...

2013
Rafael Cano Juana M Pérez Diego J. Ramón Juana M. Pérez

A new catalyst derived from osmium has been prepared, fully characterized and tested in the dihydroxylation of alkenes. The catalyst was prepared by wet impregnation methodology of OsCl3•3H2O on a commercial micro-magnetite surface. The catalyst allowed the reaction with one of the lowest osmium loadings for a heterogeneous catalyst and was selective for the monodihydroxylation of 1,5-dienes. M...

2001
H. M. J. R. H. Ross

The promoting effect of niobium in a Li/MgO catalyst for the oxidative coupling of methane (OCM) and for the oxidattve dehydrogenation of ethane (ODHE) has been studied in some detail. it has been found that a Li/Nb/MgO catalyst with 16 wt % niobium showed the highest activity for the C, production in the OCM reaction; the activity at 600 “C was ten times that of the Li/MgO catalyst at the same...

2007
S. Al-Khattaf

In the present work, the transformation of m-xylene was studied over fresh and pre-coked HZSM-5 catalyst in a riser simulator over the temperature range of 350-500C.Significant differences were observed in both the activity and product selectivity pattern for the two forms of the catalyst. While, the fresh catalyst generally gave higher m-xylene conversion, the pre-coked catalyst produced highe...

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