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Search Results: 1 - 10 of 13114 matches for " Mohammad Sadiq "
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Exploring the Catalytic Activity of Zirconia, Zirconia Supported Metals and Metal Oxides for Oxidation of Phenol  [PDF]
Mohammad Sadiq, Mohammad Ilyas
Modern Research in Catalysis (MRC) , 2012, DOI: 10.4236/mrc.2012.12004
Abstract: Catalytic oxidation/degradation of phenol with molecular oxygen in aqueous medium by Zirconia, zirconia supported metals and metal oxides at low temperature were studied in a three necked batch reactor. The catalysts prepared were characterized by modern techniques like XRD, SEM and EDX. The activities of different catalysts for the oxidation of phenol in aqueous medium were found to be in the order; Pt-Pd/ZrO2 > Bi-Pt/ZrO2 > Bi-Pd/ZrO2> Pt/ZrO2 > Pd/ZrO2 > Cu/ZrO2> Mn/ZrO2 > Bi/ZrO2. The enhanced catalytic activity of Bi-Pt/ZrO2 is attributed to Bi which in contact with Pt particles promotes its catalytic activity. In short, catalytic oxidation was found to be an effective tool, for the removal of phenol, from industrial waste water.
An Efficient Activated Carbon for the Wastewater Treatment, Prepared from Peanut Shell  [PDF]
Mohammad Sadiq, Sajid Hussian
Modern Research in Catalysis (MRC) , 2013, DOI: 10.4236/mrc.2013.24020
Abstract: My group is actively involved in the research “Preparation of activated carbon from peanut shell, characterization and its use as adsorbent and as a support for catalyst. The paper published in the MRC entitle “An Efficient Activated Carbon for the Wastewater Treatment, Prepared from Peanut Shell” Modern Research in Catalysis, 2013, 2, 148-156, was submitted in the earlier stage of research, at present stage I am fully convinced that the kinetic section of the paper is totally incorrect. Therefore I appeal that remove the paper from the Journal site to avoid the citation of incorrect literature.
Determinant Power of “Public Service Motivation” for “Job Satisfaction” and “Customer Service Orientation”: In Case of People’s Republic of China  [PDF]
Sadiq
Open Journal of Social Sciences (JSS) , 2018, DOI: 10.4236/jss.2018.61003
Abstract:
The current study is an initiative to measure the impact of determinants of “Public Service Motivations” (PSM) and to understand its impact on employee’s job satisfaction and over the intentions of “Customer Service Orientation” among employees. The study was conducted in the most of the populated region of P.R. China. Specifically, the consumer banking sector was targeted. The “Self-sacrifice” of PSM observed strongest determinant while defining job satisfaction, and customer service orientation. The study concludes that “compensation” as a part and the bits of Public Service Motivations (PSM) observed with non-determining power for job satisfaction and customer service orientation in the case of Chinese context. In the nutshell, the PSM concluded as strong determinant to understand the job satisfaction and the public service motivation where self-sacrifice is the strongest predictor of PSM in micro level view.
Synthesis and Characterization of Iron Oxide Nanoparticles Supported on Ziconia and Its Application in the Gas-Phase Oxidation of Cyclohexanol to Cyclohexanone  [PDF]
Mohammad Sadiq, Gul Zamin, Razia  , Mohammad Ilyas
Modern Research in Catalysis (MRC) , 2014, DOI: 10.4236/mrc.2014.31003
Abstract:

Iron oxide nanoparticles supported on zirconia were prepared by precipitation-deposition method and characterized by XRD, SEM, FT-IR, TGA/DTA, surface area and particle size analysis. Catalytic activities of the catalysts were tested in the gas-phase conversion of cyclohexanol in a fixed-bed flow type, Pyrex glass reactor, at 433 - 463 K. Major detected products were cyclohexanone, cyclohexene and benzene, depending on the used catalyst. The rate of reaction was significantly raised by the introduction of molecular oxygen in the feed gas, thereby suggesting the oxidation of cyclohexanol to cyclohexanone. Furthermore, the catalytic activity of iron oxide nanoparticles supported on zirconia treated with hydrogen at 553 K for 2 hours, was more selective and better than the unreduced iron oxide nanoparticles supported on zirconia, in the gas-phase oxidation of cyclohexanol to cyclohexanone. Experimental results showed that there was no leaching of metal, and that the catalyst was thus truly heterogeneous.

One-Pot Synthesis of Aldol Adduct Catalyzed by Immobilized Picolylamine on Zirconia  [PDF]
Mohammad Sadiq, Razia  , M. Naveed Umar, Gul Zamin
Modern Research in Catalysis (MRC) , 2014, DOI: 10.4236/mrc.2014.31001
Abstract:

Direct aldol reactions have been successfully performed using aromatic aldehyde and cyclic ketone in nonpolar solvent by using immobilized picolylamine on zirconia as a catalyst, in a double walled batch reactor. The prepared catalyst was characterized by SEM, XRD and FT-IR. FT-IR peaks reveal the presence of picolylamine on the surface of zirconia. The catalyst shows excellent catalytic activity in aldol reaction of cyclohexanone with benzaldehyde in cyclohexane giving 2-hydroxyphenylmethylcyclohexanone (55.7% yield) in 4 hr at 80?C. Furthermore, the catalyst is recoverable by simple filtration and could be used several times without significant loss in activity.

Efficiency of Iron Supported on Porous Material (Prepared from Peanut Shell) for Liquid Phase Aerobic Oxidation of Alcohols  [PDF]
Mohammad Sadiq, Razia  , Sajid Hussain, Gul Zamin
Modern Research in Catalysis (MRC) , 2014, DOI: 10.4236/mrc.2014.32006
Abstract:
Catalytic activity and selectivity of prepared catalysts (Fe2O3/ and Fe2O3/AC(KOH)) were investigated for liquid phase aerobic oxidation of primary and secondary alcohols, in a batch reactor, using solvent free condition and/or eco-friendly solvents. The catalysts were characterized by SEM, EDX, XRD, FTIR, TGA/DTA, and surface area and pore size analysis. Experimental data revealed that Fe2O3/AC(KOH) was an efficient catalyst for the oxidation (dehydrogenation) of alcohol while \"\" was found to show catalytic activity for both dehydration and dehydrogenation of alcohols. The catalysts were recycled by simple filtration, and used several times without any loss of catalytic activity.

Green and Efficient Oxidation of Octanol by Iron Oxide Nanoparticles Supported on Activated Carbon  [PDF]
Mohammad Sadiq, Razia Aman, Saddam Hussain, Muhammad Abid Zia, Najeeb Ur Rahman, Mohammad Saeed
Modern Research in Catalysis (MRC) , 2015, DOI: 10.4236/mrc.2015.41004
Abstract: Iron oxide nanoparticles were synthesized by precipitation method and supported on activated carbon. The catalyst thus obtained was characterized by various physicochemical techniques, and used for the liquid phase dehydrogenation/oxidation of octanol in a batch reactor at various temperatures in the range 30 °C - 60 °C. Maximum conversion of octanol to octanal was attained at 60°;C in 30 min. However, with longer reaction time, the selectivity of the catalyst was found to change in favor of octene as a product. The catalyst could be recovered and reused multiple times without any decline in its catalytic performance.
ZrO2催化无溶剂条件下醇的液相氧化反应
Mohammad ILYAS,Mohammad SADIQ,Imdad KHAN
催化学报 , 2007,
Abstract: ?采用一种环境友好的方法,以分子氧为氧化剂,以ZrO2为催化剂,在无溶剂的条件下实现了醇的选择性氧化.苯甲醛、环己酮和辛醛等是相应醇的主要氧化产物.考察了不同反应条件(搅拌速度、反应时间和温度)、催化剂制备参数(焙烧温度和负载量)及氧分压等的影响.结果发现,对于醇氧化生成相应羰基化合物,1223K焙烧的ZrO2比723K焙烧的ZrO2显示出更高的催化活性.催化剂在反应混合物中不溶解,可以通过简单的过滤使其分离并重复使用.当搅拌速度大于900r/min时,对醇的转化速率无明显的影响.
Green and Sustainable Heterogeneous Organo-Catalyst for Asymmetric Aldol Reactions  [PDF]
Mohammad Sadiq, Razia Aman, Khalid Saeed, M. Sohail Ahmad, M. Abid Zia
Modern Research in Catalysis (MRC) , 2015, DOI: 10.4236/mrc.2015.42006
Abstract: Linear amino acids covalently supported on graphene sheet were employed as catalysts for asymmetric aldol reactions between cyclohexanone and aldehydes (aliphatic and/or aromatic) in a batch type reactor in the presence of water. The reactions were found to exhibit high yield as well as excellent ee value. Additionally, the catalysts were found to be truly heterogeneous and eco-friendly.
A 20-Year-Old Contraceptive Device Transformed into a Calcified Mass  [PDF]
Awatuf Elshirif, Seema Sadiq
Open Journal of Obstetrics and Gynecology (OJOG) , 2014, DOI: 10.4236/ojog.2014.49076
Abstract:

Case: A 52-year-old female who was presented to accident and emergency felt unwell; she reported that she had an IUCD inserted over 20 years ago. On examination she had a large calcified mass occupying the vagina. CT scan confirmed a calcified IUCD. Conclusion: Serious complication secondary to IUCD is rare but well recorded, extensive calcification as in this case is very rare and has not been previously reported.

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