The present study aims to investigate the effects of iron (hydr)oxide phases formed during precipitation and the addition of different binders on the mechanical and catalytic performance of the catalyst. A series of Fe₂O₃/Cr₂O₃/CuO catalysts were synthesized via the oxidation-precipitation method. MgCO₃, aluminous cement, calcium magnesium aluminate cement and a casting repair paste (CRP) were used as the binder. XRD, SEM, BET, BJH, and TPR analyses were performed to characterize the prepared samples. Also, the Weibull model was used to analyze the crushing strength data of the fresh and used catalysts. The results show that the synthesis of the catalyst by oxidation of Fe²⁺ ions in low pH media could modify the mechanical strength of the catalyst. Also, it was found that the addition of binder affects the crystallinity, reducibility and activity of the HTS catalysts, as well as the mechanical strength. Among the fresh catalysts, the sample prepared by MgCO₃ showed the best mechanical behavior. In comparison, binder CRP exhibited the highest crush strength after reduction and reaction processes and the slightest side effects on the structure and performance of the catalyst. The activity loss during the reaction was found to be significant for the cement binders.

本研究旨在研究在沉淀过程中形成的铁（氢）氧化物相以及添加不同的粘结剂对催化剂的机械和催化性能的影响。通过氧化沉淀法合成了一系列Fe ₂ O ₃ / Cr ₂ O ₃ / CuO催化剂。MgCO ₃，铝水泥，铝酸钙镁水泥和铸造修补膏（CRP）被用作粘结剂。进行了XRD，SEM，BET，BJH和TPR分析，以表征所制备的样品。另外，使用威布尔模型来分析新鲜和使用过的催化剂的抗碎强度数据。结果表明，通过Fe ²⁺的氧化合成催化剂低pH介质中的离子会改变催化剂的机械强度。而且，发现粘合剂的加入影响HTS催化剂的结晶度，还原性和活性以及机械强度。在新鲜催化剂中，由MgCO ₃制备的样品表现出最佳的机械性能。相比之下，粘结剂CRP在还原和反应过程后表现出最高的压碎强度，并且对催化剂的结构和性能影响最小。发现反应期间的活性损失对于水泥粘合剂是显着的。