Ultra-deep removal of thiophene sulfides from transportation fuel via adsorption has aroused great attention under the pressure of gradually demanding environmental regulations. The development of high-efficiency adsorbents is the key to adsorptive desulfurization for producing clean transportation fuels. In this work, a microwave-assisted synthesis method was applied to rapidly fabricate hierarchical porous defective HKUST-1 (DEHKUST-1) towards removing benzothiophene from model fuel by selective adsorption. The effects of cetyltrimethylammonium bromide (CTAB) dosage, adsorption temperature and adsorption contact time on the DEHKUST-1 desulfurization performance were systematically investigated. The characterization results proved that both metal clusters and linker defects were generated in the as-prepared DEHKUST-1. CTAB as template could modulate the pore distribution and introduce reasonable defects in the framework of HKUST-1. At CTAB: Cu²⁺ = 0.5 by mole ratio, a regular mesoporous distribution of 25–30 nm could be obtained with DEHKUST-1; it exhibited an impressive enhancement in adsorptive desulphurization performance. The maximum adsorption capacity of the adsorbent attained 14.4 mg S/g adsorbent at 20 °C in 4 h. Even after CTAB-H-0.5 was regenerated six times, its adsorption capacity remained 93% as that of the as-prepared adsorbent. An adsorption mechanism was proposed to illustrate the promoting desulfurization performance by introduction of hierarchical porous in HKUST-1. By virtue of the rapid synthesis and remarkable benzothiophene removal capacity, the DEHKUST-1 could be a potential adsorbent in desulfurization from real fuels.

在逐步要求严格的环境法规的压力下，通过吸附从运输燃料中超深度去除噻吩硫化物引起了极大的关注。高效吸附剂的开发是用于生产清洁运输燃料的吸附脱硫的关键。在这项工作中，微波辅助合成方法被用来快速制造分级多孔缺陷HKUST-1（DEHKUST-1），以通过选择性吸附从模型燃料中去除苯并噻吩。系统研究了十六烷基三甲基溴化铵（CTAB）的用量，吸附温度和吸附接触时间对DEHKUST-1脱硫性能的影响。表征结果证明，在制备的DEHKUST-1中既产生了金属团簇，也产生了接头缺陷。CTAB作为模板可以调节孔分布，并在HKUST-1的框架内引入合理的缺陷。在CTAB：铜²⁺ = 0.5（以摩尔比计），使用DEHKUST-1可获得25–30 nm的规则介孔分布；它在吸附脱硫性能方面表现出令人印象深刻的增强。吸附剂的最大吸附容量在20°C下4 h达到14.4 mg S / g吸附剂。即使在CTAB-H-0.5再生六次之后，其吸附能力仍保持为所制备吸附剂的93％。提出了一种吸附机理来说明通过在HKUST-1中引入分级多孔来促进脱硫性能。由于快速合成和卓越的苯并噻吩去除能力，DEHKUST-1可能是从真实燃料脱硫的潜在吸附剂。