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| 1 | Effects of operating parameters on oxidative coupling of methane over Na-W-Mn/SiO_2 catalyst at elevated pressures显示文摘The effects of operating parameters on oxidative coupling of methane (OCM) over Na-W-Mn/SiO2 catalyst have been studied at elevated pressures of 0.2, 0.3 and 0.4 MPa under low gaseous hourly space velocity (GHSV) and low temperature conditions. Experimental results show that when the operating pressure is increased, C2+ yield slightly decreases, while the maximum ratio of ethylene to ethane remains unchanged. Moreover, it has been found empirically that increase of pressure does not affect the catalyst behavior permanently, the catalyst recovers its original low pressure performance without hysteresis behavior by reducing the pressure. Under the investigated conditions, when oxygen is completely consumed, the increase of GHSV leads to improvement in C2 selectivity, while C3+ and COx selectivities decrease slightly. The C2+ selectivity increases by increase of nitrogen diluent in the feed, but the C3+ hydrocarbons selectivities decrease with increase of nitrogen since it is possible that further dilution at high pressure may reduce the probability of collision between CH3 and C2+ hydrocarbons. During the stability test at high pressure, the catalyst performance remains unchanged throughout the 20 h running. The fresh and used catalysts were characterized using XRD, SEM and N2 adsorption-desorption methods. It was found that the phase transformation of the support from α-cristobalite to tridymite and quartz does not have obvious effect on catalyst performance at high pressure. | Jafar Sadeghzadeh Ahari Mohammad Taghi Sadeghi Saeed Zarrinpashne | 2011 | Journal of Natural Gas Chemistry2011，20，2： | 2 |
| 2 | Optimization of slicing direction in laminated tooling for volume deviation reduction显示文摘 | AHARI H KHAJEPOUR A BEDI S | 2013 | Assembly Automation2013，33，2： | 1 |
| 3 | Virtual cystoscopy: early clinical experience显示文摘 | Fenlon HM Bell TV Ahari HK | 1997 | Radiology1997，205，1： | 1 |
| 4 | Influence of in situ phase formation on microstruetural evolution and properties of castable refractories 显示文摘 | Sarpoolaky H Ahari K G Lee W E | 2002 | Ceramics International2002，28，5： | 1 |
| 5 | Virtual cystoscopy: early clinical experience显示文摘 | Fenlon HM Bell TV Ahari HK | 1997 | Radiology1997，205，1： | 1 |
| 6 | Determi- nants of patientrs adherence to hypertension medications: application of health belief model among rural patients 显示文摘 | Kamran A Sadeghieh Ahari S Biria M | 2014 | Ann Med Health Sci Res2014，4，6： | 1 |
| 7 | Cell-laden microengineered pullulan methacrylate hydrogels promote cell prolife-ration and 3D cluster formation显示文摘 | Bae H Ahari A F | 2011 | Soft Matter2011，7，5： | 1 |
| 8 | Virtual cystoscopy:early clinical experience显示文摘 | Felon HM Bell TV Ahari HK | 1997 | Radiology1997，205，1： | 1 |
| 9 | Comparison of virtual bronehoseopy with fiberoptic bronchoscopy findings in pa- tients exposed to sulfur mustard gas显示文摘 | Akhlaghpoor S Ahari AA Shabestari AA | 2011 | Acta Radiologica2011，52，10： | 1 |
| 10 | The relationship be- tween COPD assessment test (CAT) scores and severity of airflow obstruction in stable COPD Patients 显示文摘 | Ghobadi H Ahari SS Kameli A | 2012 | Tanaffos2012，11，2： | 1 |
| 11 | Predictive Dynamic Model of Air Separation by Pressure Swing Adsorption显示文摘 | Sadeghzadeh Ahari J Pakseresht S Mahdyarfar M | 2006 | Chemical Engineering & Technology2006，29，1： | 1 |
| 12 | A hybrid simu- lated annealing based heuristic for solving the location- routing problem with fuzzy demands 显示文摘 | Nasab N G Ahari S G Ohazanfari M | 2013 | Scientia Irani- cavol2013，20，3： | 1 |
| 13 | Sleep disturbance in latepregnancy and type and duration of labour显示文摘 | Naghi I Keypour F Ahari S B | 2011 | J Obstet Gynaecol2011，31，6： | 1 |
| 14 | Convulsion following gastro- enteritis in children without severe electrolyte imbalance 显示文摘 | Ghorashi Z Nezami N Sohani - Ahari H | 2010 | Turk J Pediatr2010，52，3： | 1 |
| 15 | Sleep disturbance in latepregnancy and type and duration of labour显示文摘 | NaghiI Keypour F Ahari S B | 2011 | J Obstet Gynaecol2011，31，6： | 1 |
| 16 | Com- parison of different screening tests for detecting diabetic foot neuropathy 显示文摘 | Forouzandeh F Aziz Ahari A Abolhasani F | 2005 | Acta Neurel Scand2005，112，6： | 1 |
| 17 | Microengineering hydrogels for stem cell bioengineering and tissue regeneration显示文摘 | Wheeldon I Ahari A F Khademhosseini A | 2010 | JALA Charlottesv Va2010，15，6： | 1 |
| 18 | Evaluation of three test methods for determining the alkali-silica reactivity of glass aggregate显示文摘 | Yukse C Ahar R S Ahari B A | 2013 | Cement and Con- crete Composites2013，38，3： | 1 |
| 19 | Influence of in situ phase formation on microstructural evolution and properties of castable refractories 显示文摘 | SARPOOLAKY H AHARI K G LEE W E | 2002 | Ceram Int2002，28，5： | 1 |
| 20 | Risk factors for complications after carotid endarterectomy--a population- based study 显示文摘 | Kragsterman B Logason K Ahari A | 2004 | Ear J Vasc Endovase Surg2004，28，1： | 1 |
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