Natural mordenite （NMOR）, modified by acid treatment and ion-exchange, was employed for NO adsorption in the present study. The NO storage capacity of modified NMOR was greatly improved compared with its original co...Natural mordenite （NMOR）, modified by acid treatment and ion-exchange, was employed for NO adsorption in the present study. The NO storage capacity of modified NMOR was greatly improved compared with its original correspondents, mainly due to the preservation of crystalline structure and the improvement of surface area of NMOR. Among all the modified NMOR, Ni-NMOR exhibited the highest adsorption capacity for NO （1.20 mmol-g^ 1） in the presence of 10% 02 at 308 K. The influence of the main ingredients in flue gas on the storage capacity of NMOR for NO had also been investigated. In general, H2O, CO2 and SO2 all displayed negative impact on NO adsorption due to their competitive adsorption on the surface of NMOR with NO, while the presence of 02 greatly improved the adsorption of NO because of the formation of NO2 and N203. Moreover, Ni-NMOR exhibited high efficiency for NOx removal through the NOx adsorption-plasma discharge process.展开更多
采用缙云产的天然丝光沸石(NM),经铵酸法处理制得氢型天然丝光沸石(HNM),然后用离子交换法 E,浸渍法 I 及机械混合法 M 载铂或钯,制成双功能催化剂。在加压微反色谱联合装置上进行 nC_5~0/nC_6~0异构化反应,测定催化活性。实验表明,采...采用缙云产的天然丝光沸石(NM),经铵酸法处理制得氢型天然丝光沸石(HNM),然后用离子交换法 E,浸渍法 I 及机械混合法 M 载铂或钯,制成双功能催化剂。在加压微反色谱联合装置上进行 nC_5~0/nC_6~0异构化反应,测定催化活性。实验表明,采用离子交换法载的铂或钯的催化剂,活性最高。同时还考察了粘结剂种类,原料组成及工艺条件,如温度、空速、氢烃比和压力对催化剂活性的影响等。使用0.5%Pd/HNM-E_(43)催化剂在20mL 小试加压临氢异构化反应器上进行了稳定性试验。数据表明,E_(43)催化剂具有较高的活性和良好的稳定性、也具有良好的再生性能。展开更多
基金Supporting information for this article is available on the WWW under http：//dx.doi.org/10.1002/cjoc.201200102 or from the authorAcknowledgement This work was financially supported by the Major Project of Zhejiang Province （No. 2009Cl1141）, the National Natural Science Foundation of China （No. 20977080） and the Natural Science Foundation of Zhejiang Province （No. J20091504）. We are also grateful to the assistance from Xiamen University for the situ-FI-IR test.
文摘Natural mordenite （NMOR）, modified by acid treatment and ion-exchange, was employed for NO adsorption in the present study. The NO storage capacity of modified NMOR was greatly improved compared with its original correspondents, mainly due to the preservation of crystalline structure and the improvement of surface area of NMOR. Among all the modified NMOR, Ni-NMOR exhibited the highest adsorption capacity for NO （1.20 mmol-g^ 1） in the presence of 10% 02 at 308 K. The influence of the main ingredients in flue gas on the storage capacity of NMOR for NO had also been investigated. In general, H2O, CO2 and SO2 all displayed negative impact on NO adsorption due to their competitive adsorption on the surface of NMOR with NO, while the presence of 02 greatly improved the adsorption of NO because of the formation of NO2 and N203. Moreover, Ni-NMOR exhibited high efficiency for NOx removal through the NOx adsorption-plasma discharge process.
文摘采用缙云产的天然丝光沸石(NM),经铵酸法处理制得氢型天然丝光沸石(HNM),然后用离子交换法 E,浸渍法 I 及机械混合法 M 载铂或钯,制成双功能催化剂。在加压微反色谱联合装置上进行 nC_5~0/nC_6~0异构化反应,测定催化活性。实验表明,采用离子交换法载的铂或钯的催化剂,活性最高。同时还考察了粘结剂种类,原料组成及工艺条件,如温度、空速、氢烃比和压力对催化剂活性的影响等。使用0.5%Pd/HNM-E_(43)催化剂在20mL 小试加压临氢异构化反应器上进行了稳定性试验。数据表明,E_(43)催化剂具有较高的活性和良好的稳定性、也具有良好的再生性能。
