Hexagonal boron nitride for selective oxidative dehydrogenation of n-hexane to olefins

Construction of Boron‐ and Nitrogen‐Enriched Nanoporous π‐Conjugated Networks Towards Enhanced Hydrogen Activation

“…Nanoporous π-conjugated networks linked by aza-fused rings have exhibited promising applications in the field of separation, catalysis, and energy storage, [34][35][36][37][38] which was featured by high surface areas and abundant N-containing functionalities, providing a good platform to further introduce B-sites particularly via in situ doping. [39][40][41][42] Herein, HAT(CN) 6 (Figure 1) was deployed as the N source, which was a promising candidate to construct networks with extensive conjugation, permanent porous channels, and abundant N-containing moieties via ionothermal or mechanochemical polymerization, as well as its analogue.…”

“…[39][40][41][42] Herein, HAT(CN) 6 (Figure 1) was deployed as the N source, which was a promising candidate to construct networks with extensive conjugation, permanent porous channels, and abundant N-containing moieties via ionothermal or mechanochemical polymerization, as well as its analogue. [37,38,[43][44][45][46][47] In order to introduce B-containing species within the scaffolds, NaBH 4 was used as the boron source and potential catalyst to polymerize the HAT(CN) 6 precursor via nucleophilic attack between the [BH 4 ] À anion and the positively charged carbons in HAT(CN) 6 and the cyclization procedure. Indeed, thermogravimetric analysis (TGA) results of the HAT(CN) 6 monomer and the HAT(CN) 6 /NaBH 4 (mass ratio of 1 : 1) under nitrogen atmosphere revealed that (Figure 2A), with a ramping rate of 10 °C min À 1 , the onset decomposition temperature of HAT(CN) 6 was 500 °C, with the residual weight of 25 % and 16 % at 590 and 800 °C, respectively.…”

“…Nanoporous π‐conjugated networks linked by aza‐fused rings have exhibited promising applications in the field of separation, catalysis, and energy storage, [34–38] which was featured by high surface areas and abundant N‐containing functionalities, providing a good platform to further introduce B‐sites particularly via in situ doping [39–42] . Herein, HAT(CN) 6 (Figure 1) was deployed as the N source, which was a promising candidate to construct networks with extensive conjugation, permanent porous channels, and abundant N‐containing moieties via ionothermal or mechanochemical polymerization, as well as its analogue [37, 38, 43–47] . In order to introduce B‐containing species within the scaffolds, NaBH 4 was used as the boron source and potential catalyst to polymerize the HAT(CN) 6 precursor via nucleophilic attack between the [BH 4 ] − anion and the positively charged carbons in HAT(CN) 6 and the cyclization procedure.…”