Lanzhou Petrochemical Polytechnic

Study on the synthesis of salicylaldimine nickel catalysts and their catalytic performance in ethylene oligomerization

A series of salicylaldimine ligands with different electronic effects and their corresponding nickel complexes were synthesized and characterized by FT-IR, UV-vis,1H NMR, TG, and MS. The ethylene oligomerization performances of the nickel catalysts were evaluated in cyclohexane....

Synergistic Vacancy-Mediated Adsorption-Activation Strategy and Spatial Confinement Effect for Enhanced Electrochemiluminescence Sensing of Isocarbophos

Abstract Exploring advanced strategies to overcome the sluggish activation kinetics of co-reactants and insufficient radical generation is pivotal for boosting electrochemiluminescence (ECL) sensing performance. Herein, an active radical-enriched ECL sensing platform for the ultr...

Reconciling the Paradox of SO 2 in the High Temperature NH3‐SCR Reaction: The Role of SO 4 2− in Electronic Structure Remodeling and Mechanism Switching Over a 3DOM Ce‐W‐Ti‐Si Catalyst

ABSTRACT At present, the effect mechanism of SO 2 on high‐temperature denitrification catalysts is unclear. In this study, 3DOM CeWTi 1‐x ‐Si x O 2 catalysts were constructed for high‐temperature NH 3 ‐SCR reaction, and deeply explored the mechanism of SO 2 on the catalyst. Among...

Pressure-Swing Homogeneous Azeotropic Distillation Combined with Heat Pump and Heat Integration Technologies for the Recovery of Ethanol, Toluene, and Acetonitrile: Multiobjective Optimization and Comprehensive Performance Evaluation

Abstract Ethanol (EtOH), toluene (TOL), and acetonitrile (ACN) often coexist in industrial wastewater and form a homogeneous azeotropic system that is difficult to separate. In this work, a pressure-swing homogeneous azeotropic distillation process was developed and intensified w...

Effect of nitrogen-assisted ultrasonic vibration treatment on microstructure and mechanical properties of near-liquidus squeeze-cast A356.2 aluminum alloy

The synergistic effects of nitrogen-assisted ultrasonic vibration treatment coupled with near-liquidus squeeze casting on the microstructure and mechanical properties of A356.2 aluminum alloy were investigated. Experimental and theoretical analyses were conducted to evaluate the...

Biodegradable dual-crosslinked chitosan/oxidized starch for slow-release urea with water retention

Low fertilizer utilization efficiency, water scarcity, and the non-degradability of synthetic polymer matrices necessitate sustainable alternatives in agriculture. This study proposes a fully biomass-based, dual-crosslinked chitosan/oxidized starch (CS/OS) hydrogel for controllab...

Research Progress in Fluorinated Isoquinoline-1,3-diones

Fluorinated isoquinoline-1,3-diones possess important biological activities and application value in many fields such as medicine, pesticides, and organic synthesis. This review summarizes the synthetic methods of fluorinated isoquinoline-1,3-diones reported in recent years, main...