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以ＥＤＴＡ为碳源分别引入到γ－Ａｌ２Ｏ３和５％ＭｇＯ／γ－Ａｌ２Ｏ３担载的Ｐａ（ＮＯ３）２催化剂上，且分别标示为Ｐａ（ＮＯ３）２／［ｓｕｐｐｏｒｔ＋ ＥＤＴＡ］和［Ｐａ（ＮＯ３）ｚ／ｓｕｐｐｏｒｔ］＋ ＥＤＴＡ，它们分别是通过改变ＥＤＴＡ对载体的浸渍次序而制备的。用上述仅经过干燥处理的催化剂进行甲烷燃烧反应并对不同反应阶段的催化剂样品进行ＸＰＳ分析。结果发现，引入到催化剂上的ＥＤＴＡ在富氧气氛下，随着温度的升高，原位被自然氧化．部分变成ＣＯ２而逸出，部分成焦而沉积在钯或载体上。在反应过程中有Ｐｄ－Ｃ固体溶液生成。外来的碳无论其存在形式或在催化剂上的位置如何，都显著有碍于甲烷燃烧，使负载的Ｐａ（ＮＯ３）２催化剂变得更不活泼。同时也讨论了在甲烷燃烧反应过程中碳对钯形貌变化的影响。
(NO3) 2 / [support + EDTA] and [Pa (NO3) 2] were respectively introduced into the catalysts Pa (NO3) 2 supported on γ-Al2O3 and 5% MgO / z / support] + EDTA, respectively, prepared by changing the order in which EDTA impregnated the support. The methane combustion reaction was conducted with the above-described dried catalyst only and XPS analysis was performed on the catalyst samples of different reaction stages. As a result, it was found that EDTA introduced into the catalyst was naturally oxidized in situ in an oxygen-enriched atmosphere with an increase in temperature. Part of the CO2 into the escape, part of the coke deposited on the palladium or carrier. Pd-C solid solution was formed during the reaction. Exotic carbon, regardless of its form of presence or location on the catalyst, significantly hinders methane combustion and renders the supported Pa (NO3) 2 catalyst less active. The effect of carbon on the morphologies of palladium during the methane combustion reaction was also discussed.