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Preparation of Nanocatalysts Using Deposition Precipitation with Urea: Mechanism, Advantages and Results
ChemBioEng Reviews ( IF 6.2 ) Pub Date : 2022-01-27 , DOI: 10.1002/cben.202100054 Amani Chrouda 1 , Shazalia Mahmoud Ali Ahmed 1 , Manahil Babiker Elamin 1
ChemBioEng Reviews ( IF 6.2 ) Pub Date : 2022-01-27 , DOI: 10.1002/cben.202100054 Amani Chrouda 1 , Shazalia Mahmoud Ali Ahmed 1 , Manahil Babiker Elamin 1
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The main works carried out on precipitation deposition with urea (DPU) are summarized. This method is widely applied and considered as excellent for the preparation of catalysts. It proved to be the optimum technique, e.g., in view of deposition yield, total reduced particle size, high particle distribution, and metal-support interaction. The influence of several parameters on the DPU process, such as the effect of temperature during deposition, maturation time, annealing manner of the final powder, metal and the urea concentrations and others, are discussed. The main steps of the DPU, the preparation of monometallic catalysts by this variant, and the bimetallic catalysts obtained by co-deposition precipitation with urea (CO-DPU) are described.
中文翻译：
尿素沉积沉淀法制备纳米催化剂：机理、优势和结果
总结了尿素沉淀法（DPU）的主要工作。该方法被广泛应用并被认为是制备催化剂的优良方法。它被证明是最佳技术，例如，考虑到沉积产量、总减小的颗粒尺寸、高颗粒分布和金属-载体相互作用。讨论了几个参数对DPU工艺的影响，如沉积过程中的温度、成熟时间、最终粉末的退火方式、金属和尿素浓度等。描述了 DPU 的主要步骤，通过该变体制备单金属催化剂，以及通过与尿素共沉积沉淀 (CO-DPU) 获得的双金属催化剂。
更新日期：2022-01-27
中文翻译：
尿素沉积沉淀法制备纳米催化剂：机理、优势和结果
总结了尿素沉淀法（DPU）的主要工作。该方法被广泛应用并被认为是制备催化剂的优良方法。它被证明是最佳技术，例如，考虑到沉积产量、总减小的颗粒尺寸、高颗粒分布和金属-载体相互作用。讨论了几个参数对DPU工艺的影响，如沉积过程中的温度、成熟时间、最终粉末的退火方式、金属和尿素浓度等。描述了 DPU 的主要步骤，通过该变体制备单金属催化剂，以及通过与尿素共沉积沉淀 (CO-DPU) 获得的双金属催化剂。
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