Tao Li

The construction of aryl˗aryl, aryl˗heteroaryl or heteroaryl˗heteroaryl linkages via Suzuki coupling reactions is essential and common in industrial applications, which warrants the development of the pharmaceutical drugs, dyes, and agrochemicals fields. In this review, the general mechanism and practical application of Suzuki reactions are briefly described. Importantly, special attention is paid to the C-C coupling activity of supported Pd catalysts based on diverse recently developed materials. Furthermore, the application of the transition metals-based heterogeneous catalysts (Ni, Cu, Fe, Co) in Suzuki reactions was also summarized and compared. It is anticipated that this overview will improve current understanding and motivate further innovation toward the development of highly efficient and low-cost heterogeneous catalysts for Suzuki coupling reactions.

The development of efficient physisorbents for trace CO₂ capture remains a critical challenge. Moving beyond conventional metal-CO₂ interaction strategies, we demonstrate a powerful alternative pathway through atomic-level engineering of zeolite oxygen electronic states. Incorporating Ce into the mordenite (MOR) framework generates electron-rich lattice oxygens and spatially polarized O^δ--Ce^δ+-O^δ- domains within the channels. These unique electronic features endow the resulting Ce-MOR with exceptional CO₂ uptake, even at high Si/Al ratios (∼8). Spectroscopic analyses and density functional theory (DFT) calculations reveal that strong Ce 4f-O 2p orbital coupling redistributes electron density, creating robust trapping sites. The electron-rich O^δ- atoms serve as primary binding centers, synergizing with adjacent Ce^δ+ to enable dual CO₂ adsorption pathways: C^δ+(CO₂)···O^δ- (framework) and O^δ-(CO₂)···Ce^δ+. Furthermore, by assembling Ce-MOR crystals into a binder-free monolith, we achieve enhanced mass transport and mechanical stability, translating the intrinsic adsorption advantages of Ce-MOR into superior dynamic CO₂ capture performance under realistic flow conditions. This work offers a novel perspective on designing practical, high-efficiency physisorbents by tailoring electron-rich anionic centers and integrating them into scalable monolithic architectures.

For the first time, a highly dispersed Pd-modified SSZ-13 zeolite was synthesized via a green and efficient route without post-treatment and exhibited remarkable PNA (passive NOx adsorber) performance compared to Pd/SSZ-13 zeolite synthesized by a traditional impregnation method. Pd2+ and Na+ located at exchange sites and the SSZ-13 support jointly functioned as effective adsorption sites for NOx storage. Furthermore, this green and efficent method avoids a lot of waster water, electric power and labor used in the traditional methods.

Pd/SSZ-13 has been proposed as a passive NO_x adsorber (PNA) for low-temperature NO_x adsorption. However, it remains challenging for Pd/SSZ-13 to work efficiently when suffering from phosphorus poisoning. Herein, we report a simple and efficient strategy to regenerate the phosphorus-poisoned Pd/SSZ-13 based on the cooperation between hydrothermal aging treatment and Na cocations. It was found that hydrothermal aging treatment enabled the redispersion of Pd and P-containing species in phosphorus-poisoned Pd/SSZ-13. Meanwhile, the presence of Na cocations significantly reduced the formation of AlPO₄ and retained more paired Al sites for highly dispersed Pd²⁺ ions, which was of great importance for the recovery of adsorption performance. To our satisfaction, the restoration ratio of the adsorption capacity of poisoned Pd/SSZ-13 was >90% after regeneration. Strikingly, the NO_x adsorption activities of phosphorus-poisoned Pd/SSZ-13 with phosphorus loadings of 0.2 and 0.4 mmol g^-1 almost completely recovered upon regeneration. This study demonstrates the promoting effect of Na cocations on the regeneration of phosphorus-poisoned Pd/SSZ-13 by hydrothermal aging treatment, which provides useful guidance for the design of PNA materials with excellent durability for cold-start application.

The Cu-SAPO-18 was prepared by the one-pot method and modified through hydrothermal post-treatment, metal-doped Nd(x)/Cu-SAPO-18 (x = 0.4, 0.8, 1.2, 1.6) catalysts were obtained. The catalytic performance of fresh and aged Nd(x)/Cu-SAPO-18 was evaluated by ammonia selective catalytic reduction (NH₃-SCR) reaction. The NO_x conversion rate of Nd (1.2)/Cu-SAPO-18 was highest. More than 94.5% NO_x conversion was maintained over the aged Nd(x)/Cu-SAPO-18 during 250–450°C, which was almost 10% higher than the conversion of aged Cu-SAPO-18. Various techniques including XRD, XRF, BET, SEM, ²⁷Al MAS NMR, XPS, UV-vis, NH₃-TPD, H₂-TPR, were applied to explore the effect of Nd content on the physiochemistry property of Cu-SAPO-18. The addition of Nd effectively maintained the relatively large specific surface area and uniform pore size distribution. Moreover, the dealumination progress of Cu-SAPO-18 was mitigated and the aggregation of copper species during hydrothermal aging process was restrained. Thus, Nd(x)/Cu-SAPO-18 owed less CuO_x and more amount of isolated Cu²⁺ ions, which stabilized catalyst structure by entering the double 6-membered ring (D6R). Meanwhile, the incorporation of Nd enhanced the redox property and stabilised surface acid sites of Cu-SAPO-18, which were responsible for facilitating the adsorption and activation of reactants. GRAPHICAL ABSTRACT