%0 Journal Article
%T Catalytic Hydrogenation Reactions on Molybdenum Oxide
%A H. Al-Kandari
%A S. Al-Kandari
%A A. M. Mohamed
%A F. Al-Kharafi
%A A. Katrib
%J Modern Research in Catalysis
%P 36-42
%@ 2168-4499
%D 2015
%I Scientific Research Publishing
%R 10.4236/mrc.2015.41005
%X Partially reduced molybdenum trioxide deposited on titania under hydrogen at 673 K for 12 h ena- bled to convert several surface atomic layers to the catalytically active bifunctional (metal-acid) MoO<sub>2<span style=\"font-family:'Verdana, Helvetica, Arial';\"><span style=\"line-height:18px;\">-</span></span>x</sub>(OH)<sub>y</sub>/TiO<sub>2</sub> (MoTi) structure. The formed metallic function is the result of ¦Ð bonding between adjacent Mo-Mo atoms placed along the C-axis of the rutile structure of MoO<sub>2</sub>. Delocalization of these ¦Ð electrons produces a wire like atomic metal. This resembles in a way, the small Pt particles deposited on a support. Moreover, dissociated hydrogen atoms are bonded to sample surface oxygen to produce Br<span style=\"font-family:Verdana, Helvetica, Arial;line-height:18px;white-space:normal;background-color:#FFFFFF;\">&amp;oslash;</span>nsted acid Mo-OH function(s). These metal-acidic properties have been tested for several catalytic reactions requiring one or bothcatalytic functions. In this order, 2-propanol species could be considered as a model test of the acidic function via dehydration of the molecule to propene, while hydrogenation of the produced propene to propane is performed by the metallic function. Moreover, hydrogenation of 2-propanol to acetone, requires relatively strong metallic function. In this order, addition of small amount of alkali metal like rubidium will suppress the acidic function in MoO<sub>2-x</sub>(OH)<sub>y</sub>/TiO<sub>2</sub> and enhance the metallic function strength. The performance of the metallic function alone in this case will be evaluated. Titanium dioxide is employed in this catalytic system as a support. It does not have any catalytic effect. Association of XPS-UPS, ISS sur-face techniques with catalytic performances of this catalytic MoTi system will be presented.
%K MoO&lt
%K sub&gt
%K 2-x&lt
%K /sub&gt
%K (OH)&lt
%K sub&gt
%K y&lt
%K /sub&gt
%K Catalyst
%K XPS
%K Acid-Metal Functions
%K Hydrogenation
%K 2-Propanol
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53050