We report herein the upscaled synthesis and shaping of UiO66-COOH for NH₃ air purification. The synthesis of the zirconium-based MOF was carried out in a batch reactor in an aqueous suspension with a yield of 89% and a space-time yield of 350 kg/day/m³. Neither toxic chemicals nor organic solvents were used, allowing this MOF to be employed in individual or collective air purification devices. Freeze-granulation and extrusion shaping techniques were investigated. The NH₃ air purification performances of UiO66-COOH in bead, tablet and extrudate forms were compared to those of commercial carbon based materials (type K adsorbents from3M and Norit). Testing conditions were chosen to reflect current standards for ammonia concentration (600–1200 ppm) and velocity. In addition, the breakthrough measurements were carried out at three different relative humidity levels (0%, 40%, and 70%). Pellets and extrudates of UiO66-COOH outperformed commercial benchmark adsorbents in all conditions, especially in dry conditions, for which the commercial adsorbents suffered impaired ammonia uptake and shortened service life. Extrudates of UiO66-COOH also withstood attrition after intensive shaking.

中文翻译：

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氨气净化滤池功能化UiO-66 MOF的合成及定型放大研究

我们在此报告了用于NH ₃空气净化的UiO66-COOH的高档合成和成型。锆基MOF的合成在间歇反应器中在水悬浮液中进行，产率为89％，时空产率为350 kg / day / m ³。既没有使用有毒化学物质，也没有使用有机溶剂，因此该MOF可用于单独或集体的空气净化设备。研究了冷冻制粒和挤出成型技术。NH ₃比较了UiO66-COOH在微珠，片剂和挤出物中的空气净化性能与商业碳基材料（来自3M和Norit的K型吸附剂）的空气净化性能。选择测试条件以反映当前关于氨气浓度（600-1200 ppm）和速度的标准。此外，突破性测量是在三种不同的相对湿度水平（0％，40％和70％）下进行的。在所有条件下，尤其是在干燥条件下，UiO66-COOH的颗粒和挤出物均优于商用基准吸附剂，因为商用吸附剂的氨吸收受到损害，使用寿命缩短。强烈振摇后，UiO66-COOH挤出物也能经受磨损。