A highly efficient and stable catalyst for liquid phase catalytic exchange of hydrogen isotopes in a microchannel reactor

Direct amination of poly(p-phenylene oxide) to substituted anilines over bimetallic Pd–Ru catalysts

“…66,67 Nonetheless, the D 2 -H 2 exchange catalyzed by Pd might mitigate the isotope effect. 68,69 Additionally, the liquid products were analyzed by GC-MS to determine deuterium atom distribution within desired com-pounds. Utilizing mass fragmentation patterns, we established the isotopologue distribution (Fig.…”

Hydrogen evolution reaction of Ben + H2O (n = 5–9) based on density functional theory

“…Recent studies on two-dimensional structures, clusters and visible-light-driven photocatalytic hydrogen evolution reactions are also effective methods for developing hydrogen energy. 22–27 Vos et al . 28,29 reported a high level of single-reference and multi-reference ab initio calculations showing that Be 4 clusters exhibit very efficient Lewis acids when interacting with conventional Lewis bases such as ammonia, water, or hydrogen fluoride.…”

“…As doped, Be atoms effectively improve the NLO reaction, thermodynamics, and hydrogen adsorption properties of Al 12 N 12 nanoclusters, which were found in the study of Mehboob et al 21 Recent studies on two-dimensional structures, clusters and visible-light-driven photocatalytic hydrogen evolution reactions are also effective methods for developing hydrogen energy. [22][23][24][25][26][27] Vos et al 28,29 reported a high level of single-reference and multireference ab initio calculations showing that Be 4 clusters exhibit very efficient Lewis acids when interacting with conventional Lewis bases such as ammonia, water, or hydrogen fluoride. The corresponding acid-base interactions trigger the sequential dissociation of all Lewis bases.…”

Hydrophilic Amino Groups Acted in the Hydrophobic Reaction Environment for Efficient Hydrogen Isotopes Enrichment

“…To avoid such water poisoning, many researchers have been making efforts to increase hydrophobicity of the supports. Pt nanoparticles (Pt NPs) or Pt-loaded catalysts mixed with various hydrophobic supports, such as styrene-divinylbenzene copolymer (SDB), polytetrafluoroethylene (PTFE), polydimethylsiloxane (PDMS), and so on, were developed for catalyst packing for catalyzing LPCE much more stably and efficiently. − In a comparison of the direct mixture of Pt NPs and the above hydrophobic supports (defined as the first support), the Pt-loaded catalyst plays a more efficient role because another hydrophobic component (defined as the second support) is introduced first to increase the proportion of active sites actually exposed. , Although the efficiency of the catalytic exchange process was improved through increasing the dispersion of the Pt site, due to the water molecules involved in the reaction, severe internal diffusion resistance for water molecules reaching the Pt active site still exists in the channels of second support. In fact, to achieve the high efficiency of LPCE, more than 50% of the hydrophilic packings were usually filled into the reaction column to enhance the efficient contact between hydrophobic catalyst and liquid water containing deuterium or tritium .…”