Synergistic effect of Ni-Co alloying on hydrodeoxygenation of guaiacol over Ni-Co/Al2O3 catalysts

Article abstract of DOI:10.1016/j.mcat.2020.111290

The hydrodeoxygenation (HDO) of guaiacol was investigated in a batch reactor using Ni-Co/γ-Al₂O₃ catalysts prepared by co-impregnation method. The structural and physicochemical properties of the catalysts were investigated using BET, XRD, H₂-TPR, FT-IR, and NH₃-TPD. The characterization results revealed that the formation of various Ni-Co composite species strongly depend on the Ni/Co mole ratio, total metal loadings, and the calcination/reduction temperature. The _6.1Ni_3.05CoAl (Ni/Co = 1:2) catalyst seeds the formation of NiCo₂O₄ spinel structure and subsequent formation of Ni-Co alloy, which represents as specific active site for direct demethoxylation/deoxygenation reaction. The synergistic interaction of Ni-Co enhances the selectivity of benzene. The benzene selectivity of 35.2 % and cyclohexane selectivity of 59.1 % with complete conversion of guaiacol (98.9 %) were achieved with the _3.05Ni_6.1CoAl catalyst at 575 K. A tentative reaction pathway is proposed based on the product distribution accomplished during HDO reaction. The structural property was correlated with activity to explore the mechanistic insights.

Full text of DOI:10.1016/j.mcat.2020.111290

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Annals of Physical and Rehabilitation Medicine 56S (2013) e287
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Presentation de la session / Session presentation
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Pediatrie (2) – Membre superieur : paralysie obstetricale du plexus brachial
et reeducation du membre superieur (session SOFMER-SFERHE)
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Pediatrics (2) – Upper limb: Obstetric brachial plexus palsy and rehabilitation
of the upper limb (SOFMER-SFERHE session)
1. Version franc¸aise
2. English version
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La prise en charge reeducative du membre superieur evolue
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grandement en 2013 a la lumiere des travaux de recherche
Based on current research in this field, rehabilitation care
of the upper limbs has greatly evolved in 2013. We chose to
devote this second pediatric session to two upper limb
pathologies frequent in PMR: obstetric brachial plexus palsy
(OBPP) and hemiplegia type cerebral palsy (CP). After a focus
on current knowledge and practices in OBPP, we will examine
the biomechanical consequences of these injuries on muscu-
loskeletal growth. Recalling the last SFERHE congress on
upper limb rehabilitation in CP children and adults, we will
discuss the contribution of mental imaging as part of this
rehabilitation process. We will also present a protocol using an
interactive robot.
actuels nombreux dans ce domaine.
Nous avons donc fait le choix de consacrer cette deuxieme
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session pediatrique a deux pathologies du membre superieur
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frequentes en MPR a savoir la paralysie obstetricale du plexus
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brachial (POPB) et la paralysie cerebrale (PC) de type
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hemiplegie. Apres une mise au point sur les connaissances et
les pratiques actuelles dans la POPB, nous aborderons les
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musculo-squelettique. Puis en echo et en partenariat avec
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consequences biomecaniques de ces lesions sur la croissance
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le dernier congres de la SFERHE sur la reeducation du membre
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superieur de l’enfant et de l’adulte PC, nous verrons l’interet
Without doubt, a high-quality scientific session!
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de l’imagerie mentale dans cette reeducation ainsi qu’un
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protocole de reeducation avec un robot interactif. Une session
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de grande qualite scientifique a n’en pas douter !
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1877-0657/$ – see front matter # 2013 Publie par Elsevier Masson SAS.
http://dx.doi.org/10.1016/j.rehab.2013.07.519