Several Ru-Ti oxide-based catalysts were investigated for the catalytic oxidation of HCl to Cl2 in this work. The active component RuO2 was loaded on different titanium-containing supports by a facile wetness impregnation method. The Ru-Ti oxide based catalysts were characterized by XRD, N2 sorption, SEM, TEM, H2-TPR, XPS, and Raman, which is correlated with the catalytic tests. Rutile TiO2 was confirmed as the optimal support even though it has a low specific surface area. In addition to the interfacial epitaxial lattice matching and epitaxy, the extraordinary performance of Ru-Ti rutile oxide could also be attributed to the favorable oxygen species on Ru sites and specific active phase-support interactions. On the other hand, the influence of additive Ce on the RuO2/TiO2-rutile was studied. The incorporation of Ce by varied methods resulted in further oxidation of RuO2 into RuO2δ+ and a modification of the support structure. The amount of favorable oxygen species on the surface was decreased. As a result, the Deacon activity was lowered. It was demonstrated that the surface oxygen species and specific interactions of the Ru-Ti rutile oxide were critical to HCl oxidation.

Triethylene diamine (DABCO) can interact with H2O and CO2 in air to form dimeric and trimeric complexes via hydrogen bond, tetrel bond as well as van der Waals interactions.

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The selective synthesis of 2‐methyl‐1,2‐propyldiamine (MPDA) directly from 2‐amino‐2‐methyl‐1‐propanol (AMP) and ammonia via one‐pot reaction is reported for the first time. The effects of catalyst species and reaction variables on the synthetic performance of MPDA were systematically studied. In contrast to other catalysts, a high MPDA selectivity of 88.3% and AMP conversion of 45.6% were obtained over Raney Ni catalyst. The components of the final reaction mixtures were particularly dependent on the initial hydrogen pressure and stirring speed. Furthermore, a possible mechanism of the reaction was proposed on the basis of experimental results, which has great implications in the development of more efficient and higher selectivity catalysts.