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Bifunctional Mg−Cu‐Loaded β‐Zeolite: High Selectivity for the Conversion of Furfural into Monoaromatic Compounds
ChemCatChem ( IF 3.8 ) Pub Date : 2018-07-11 , DOI: 10.1002/cctc.201800450 Surachai Karnjanakom 1, 2 , Akihiro Yoshida 1, 2 , Asep Bayu 1, 2 , Irwan Kurnia 1, 2 , Xiaogang Hao 3 , Panya Maneechakr 4 , Abuliti Abudula 2 , Guoqing Guan 1, 2
ChemCatChem ( IF 3.8 ) Pub Date : 2018-07-11 , DOI: 10.1002/cctc.201800450 Surachai Karnjanakom 1, 2 , Akihiro Yoshida 1, 2 , Asep Bayu 1, 2 , Irwan Kurnia 1, 2 , Xiaogang Hao 3 , Panya Maneechakr 4 , Abuliti Abudula 2 , Guoqing Guan 1, 2
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Mg−Cu‐loaded β‐zeolite was prepared as an acid−base bifunctional catalyst for the conversion of furfural to monoaromatic compounds. It is found that this catalyst exhibited high selectivity towards benzene, toluene and xylenes (BTXs) production with anti‐polycyclic‐aromatic‐hydrocarbon formation as well as anti‐coking ability when compared with Cu‐loaded β‐zeolite and the parent β‐zeolite. The product distribution indicated that addition of Cu species significantly promoted the deoxygenation and aromatization of an intermediate product of furan while Mg apparently suppressed the polyaromatization. Especially, an optimum loading amount of 0.5 wt%Mg‐1 wt%Cu on β‐zeolite was obtained, which showed lower catalytic deoxygenation temperature and interestingly, only benzene was detected in the liquid product at a reaction temperature over 700 °C. Also, 0.5 wt%Mg‐1 wt%Cu/β‐zeolite exhibited long‐term stability for 10 cycles with 100 % of furfural conversion to monoaromatic compounds. The physicochemical properties of β‐zeolite after Cu and Mg loadings were characterized using N2 sorption, XRD, SEM‐EDX, TEM, H2‐TPR, UV‐Vis, XPS, NH3‐TPD and CO2‐TPD techniques. The significant changing of acidity and basicity of β‐zeolite were found after Cu and Mg loadings, which should be the main factors for the improvement of activity, selectivity and stability of the developed catalyst.
中文翻译：
负载双功能Mg-Cu的β-沸石：糠醛向单芳族化合物转化的高选择性
制备了Mg-Cu负载的β沸石作为酸基双功能催化剂，用于将糠醛转化为单芳族化合物。发现该催化剂对苯，甲苯和二甲苯（BTXs）的生产表现出高选择性，与负载铜的β沸石和母体β沸石相比，具有形成抗多环芳烃的能力以及抗结焦能力。 。产物分布表明，Cu种类的添加显着促进了呋喃中间产物的脱氧和芳构化，而Mg明显抑制了聚芳构化。特别是在β沸石上获得的最佳负载量为0.5 wt％Mg-1 wt％Cu，这显示出较低的催化脱氧温度，有趣的是，在超过700°C的反应温度下，液体产品中仅检测到苯。另外，0。5 wt％Mg-1 wt％Cu /β沸石在10个循环中表现出长期稳定性，其中糠醛100％转化为单芳族化合物。用N表征负载Cu和Mg后β沸石的理化性质。2吸附，XRD，SEM-EDX，TEM，H 2 -TPR，UV-Vis，XPS，NH 3 -TPD和CO 2 -TPD技术。负载铜和镁后，β-沸石的酸度和碱度发生了显着变化，这应该是改善所开发催化剂的活性，选择性和稳定性的主要因素。
更新日期：2018-07-11
中文翻译：
负载双功能Mg-Cu的β-沸石：糠醛向单芳族化合物转化的高选择性
制备了Mg-Cu负载的β沸石作为酸基双功能催化剂，用于将糠醛转化为单芳族化合物。发现该催化剂对苯，甲苯和二甲苯（BTXs）的生产表现出高选择性，与负载铜的β沸石和母体β沸石相比，具有形成抗多环芳烃的能力以及抗结焦能力。 。产物分布表明，Cu种类的添加显着促进了呋喃中间产物的脱氧和芳构化，而Mg明显抑制了聚芳构化。特别是在β沸石上获得的最佳负载量为0.5 wt％Mg-1 wt％Cu，这显示出较低的催化脱氧温度，有趣的是，在超过700°C的反应温度下，液体产品中仅检测到苯。另外，0。5 wt％Mg-1 wt％Cu /β沸石在10个循环中表现出长期稳定性，其中糠醛100％转化为单芳族化合物。用N表征负载Cu和Mg后β沸石的理化性质。2吸附，XRD，SEM-EDX，TEM，H 2 -TPR，UV-Vis，XPS，NH 3 -TPD和CO 2 -TPD技术。负载铜和镁后，β-沸石的酸度和碱度发生了显着变化，这应该是改善所开发催化剂的活性，选择性和稳定性的主要因素。
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