1b:I[76749,["/_next/static/chunks/0383663887945ae7.js","/_next/static/chunks/df7e62179e4ae938.js","/_next/static/chunks/acf71181277ecf85.js","/_next/static/chunks/63561dcd578bd4db.js","/_next/static/chunks/5bf36002c846d2d8.js","/_next/static/chunks/b24fef6e58c9b2f5.js","/_next/static/chunks/ea1fda2cc52e974e.js"],"default"] 1c:I[3486,["/_next/static/chunks/0383663887945ae7.js","/_next/static/chunks/df7e62179e4ae938.js","/_next/static/chunks/acf71181277ecf85.js","/_next/static/chunks/63561dcd578bd4db.js","/_next/static/chunks/5bf36002c846d2d8.js","/_next/static/chunks/b24fef6e58c9b2f5.js","/_next/static/chunks/ea1fda2cc52e974e.js"],"default"] 1d:I[41892,["/_next/static/chunks/0383663887945ae7.js","/_next/static/chunks/df7e62179e4ae938.js","/_next/static/chunks/acf71181277ecf85.js","/_next/static/chunks/63561dcd578bd4db.js","/_next/static/chunks/5bf36002c846d2d8.js","/_next/static/chunks/b24fef6e58c9b2f5.js","/_next/static/chunks/ea1fda2cc52e974e.js"],"default"] 1e:I[17707,["/_next/static/chunks/0383663887945ae7.js","/_next/static/chunks/df7e62179e4ae938.js","/_next/static/chunks/acf71181277ecf85.js","/_next/static/chunks/63561dcd578bd4db.js","/_next/static/chunks/5bf36002c846d2d8.js","/_next/static/chunks/b24fef6e58c9b2f5.js","/_next/static/chunks/ea1fda2cc52e974e.js"],"default"] 1f:I[66528,["/_next/static/chunks/0383663887945ae7.js","/_next/static/chunks/df7e62179e4ae938.js","/_next/static/chunks/acf71181277ecf85.js","/_next/static/chunks/63561dcd578bd4db.js","/_next/static/chunks/5bf36002c846d2d8.js","/_next/static/chunks/b24fef6e58c9b2f5.js","/_next/static/chunks/ea1fda2cc52e974e.js"],"default"] 20:I[63176,["/_next/static/chunks/0383663887945ae7.js","/_next/static/chunks/df7e62179e4ae938.js","/_next/static/chunks/acf71181277ecf85.js","/_next/static/chunks/63561dcd578bd4db.js","/_next/static/chunks/5bf36002c846d2d8.js","/_next/static/chunks/b24fef6e58c9b2f5.js","/_next/static/chunks/ea1fda2cc52e974e.js"],"default"] 21:I[87099,["/_next/static/chunks/0383663887945ae7.js","/_next/static/chunks/df7e62179e4ae938.js","/_next/static/chunks/acf71181277ecf85.js","/_next/static/chunks/63561dcd578bd4db.js","/_next/static/chunks/5bf36002c846d2d8.js","/_next/static/chunks/b24fef6e58c9b2f5.js","/_next/static/chunks/ea1fda2cc52e974e.js"],"default"] 22:I[26200,["/_next/static/chunks/0383663887945ae7.js","/_next/static/chunks/df7e62179e4ae938.js","/_next/static/chunks/acf71181277ecf85.js","/_next/static/chunks/63561dcd578bd4db.js","/_next/static/chunks/5bf36002c846d2d8.js","/_next/static/chunks/b24fef6e58c9b2f5.js","/_next/static/chunks/ea1fda2cc52e974e.js"],"Group"] 23:I[23365,["/_next/static/chunks/0383663887945ae7.js","/_next/static/chunks/df7e62179e4ae938.js","/_next/static/chunks/acf71181277ecf85.js","/_next/static/chunks/63561dcd578bd4db.js","/_next/static/chunks/5bf36002c846d2d8.js","/_next/static/chunks/b24fef6e58c9b2f5.js","/_next/static/chunks/ea1fda2cc52e974e.js"],"default"] 24:T4a0,Hexamethylene diamine, an important chemical intermediate for polyamides, can be synthesized through the two-step route of caprolactam (CPL) ammonolysis to 6-aminocapronitrile (ACN), followed by hydrogenation. This method has received increasing attention from academia and industry. However, studies on the catalyst structure-performance correlation in CPL ammonolysis are still sporadic. In this work, a series of anatase TiO₂ with different oxygen vacancy concentrations was prepared by chemical reduction using NaBH₄. The oxygen vacancy on TiO₂ surface, presented as Ti³⁺ sites, substantially enhances the adsorption and activation of NH₃, which are demonstrated as the key steps in ammonolysis. Owing to the synergistic effect of Ti³⁺ and Ti⁴⁺ species, the CPL conversion rate and ACN selectivity of 85 and 97%, respectively, are achieved within 250 h. Density functional theory calculations showed that the intermediates on oxygen vacancy-rich TiO₂ had a more favorable adsorption energy compared to those on intact TiO₂, which is in good agreement with the exp

Hui Zheng

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