Available online at www.sciencedirect.com Chinese Chemical Letters 20 (2009) 889–892 www.elsevier.com/locate/cclet Highly selective CO methanation over amorphous Ni–Ru–B/ZrO2 catalyst Qi Hai Liu‚ Xin Fa Dong *‚ Wei Ming Lin School of Chemistry and Chemical Engineering‚ South China University of Technology‚ Guangzhou 510640‚ China Received 15 December 2008 Abstract Amorphous Ni–Ru–B/ZrO2 catalyst was prepared by the means of chemical reduction‚ and selective CO methanation as a strategy
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dissociation constant (Ka) for the weak acid HX in aqueous solution is 3.01 × 10–5 mol dm–3. (i) Calculate the value of pKa for HX at this temperature. Give your answer to 2 decimal places. ............................................................................................................... ............................................................................................................... (1) (ii) Write an expression for the acid dissociation constant (Ka) for the
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purchase of KA oil (a mixture of cyclohexanone‚ the ketone or K component‚ and cyclohexanol‚ the alcohol or A component)‚ or of pure cyclohexanol‚ and its subsequent oxidation in solution to adipic acid using an excess of strong nitric acid. This report deals with KA oil/cyclohexanol production by various routes‚ followed by the common step of nitric acid oxidation. KA oil production from cyclohexane by the cobalt catalyst and boric acid air oxidation routes is reviewed. Production of KA oil from
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CHAPTER I THE PROBLEM Introduction Folktales are one of the forms of prose narrative which we regarded as fiction. They are not considered as dogma or history‚ they may or may not have happened‚ and they are not to be taken seriously.1 However‚ folktales like other stories provide various experiences that is why they are important. Folktales are not merely stories but there are morals in them‚ probably not obvious but underlying morals in it. In like manner‚ folktales may not be history
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3. Research Finding and Conclusion: 1. Table‚ chart‚ calculation and interpretation: 3.1 Customer profile: 3.1.1 Customers’ Age: Age Midpoint (x) Frequency (f) Percentage <18 12 11 11 ≥18<30 24 25 25 ≥30<55 42 47 47 ≥55 67 17 17 Total 100 100 Table 3.1.1: The age of customers (Authors research) Chart 3.1.1: The age of customers Mean = f(x)f = 38.45 Variance = fx2f – x2 = 273.6 Standard deviation = 273.6 = 16.54 Mode 30-55 Median belong to ≥30<55 group SD độ lệch chuẩnMD
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Determination of Ka for a Weak Acid Introduction In the experiment preformed the objective is to titrate a weak acid with a strong base. In a titration of a weak acid with a strong base the titrant is the strong base and the analyte is a weak acid. The reaction that will occur is the direct transfer of protons from the weak acid to the hydroxide ion. The data gathered will be represented on the titration curve‚ a graph of the volume of titrant being the strong base plotted against the pH .The
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AMUL BUTTER – MP3 “Kaise sumjhaoon tumhe ki yeh Mera Pehla Pehla Pyaar (MP3)hai”. A billion page thesis‚ a never ending lecture‚ a review limited to 7500 characters and of course a silence till eternity can never explain my love for –AMUL BUTTER. Kaise sumjhaoon tumhe ki yeh AMUL BUTTER Mera Pehla Pehla Pyaar Hai. It was my Love at First Sight (Oops Sorry First Bite) and that’s the one for lasts. They say that we don’t have memories beyond the age of Five‚ ie‚ if asked we can’t tell anything
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Ancient Egyptians had a strong belief in preserving the body for the afterlife in hopes of achieving immortality. Part of this preservation was to protect and identify the body by painting or carving pictures‚ hieroglyphics‚ and symbols on the coffin. One very good example of this is represented by the ‘Mummy of Irethorrou in Coffin.’ This coffin‚ made of wood with polychrome‚ is adorned with hieroglyphics‚ symbols‚ and a portrait of the Egyptian priest. It was found in a cemetery in Akhmim‚ and
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development of the world without improving our English language. For example‚ the Minister Mentor of Singapore‚ Lee Kuan Yew states that SHANG HAI have the potential to be the biggest financial city in the world. However‚ it needs the support of all the world top financier‚ lawyer and accountant to make it the biggest financial centre instead of HONG KONG. Thus‚ SHANG HAI needs a group people who had mastered in English. So that it can contribute an English environment to combine with other financial centre
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SEPTEMBER 2011 COHORT NURS 07001 ESSENTIAL NURSING SKILLS 23 APRIL 2012 WORD COUNT: 539 Health care-associated infections (HAI) affect hundreds of millions of patients worldwide every year (WHO 2009). HAI’s can inflict unexpected high costs to the NHS‚ not only is there a financial problem but HAI’s can contribute to unnecessary patient deaths. The Cleanliness Champion programme was introduced by the Government and it aims to promote all those who work in a health care setting to
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