Entity

Time filter

Source Type


Sharma S.K.,Indian Central Salt and Marine Chemicals Research Institute | Sharma S.K.,University of Bath | Sidhpuria K.B.,Indian Central Salt and Marine Chemicals Research Institute | Sidhpuria K.B.,University of Aveiro | And 2 more authors.
Journal of Molecular Catalysis A: Chemical | Year: 2011

Ruthenium containing hydrotalcite (Ru-HT) was synthesized by partial substitution of Mg2+ or Al3+ cations by ruthenium metal in octahedral layers of hydrotalcite and used as a catalyst for hydrogenation of benzene to cyclohexane. Effect of catalyst amount, reaction temperature, partial pressure of hydrogen and volume of solvent on conversion of benzene was studied in detail. Higher conversion of benzene in lower reaction time was observed in lower volume of solvent. Complete conversion of benzene with 100% selectivity of cyclohexane was observed at 120 °C reaction temperature and 60 atm partial pressure of H2 in 2 h reaction time. Presence of moisture in the reaction mixture showed negligible effect on catalytic activity of Ru-HT, however, activity decreased significantly on increasing the sulfur concentration. Catalyst was recycled upto four times without significant loss in its activity. No conversion of benzene was observed in case of pristine hydrotalcite (without ruthenium) as a catalyst. © 2010 Elsevier B.V. Source


Tambe P.B.,Indian Institute of Technology Bombay | Bhattacharyya A.R.,Indian Institute of Technology Bombay | Kamath S.S.,Indian Institute of Technology Bombay | Kulkarni A.R.,Indian Institute of Technology Bombay | And 6 more authors.
Polymer Engineering and Science | Year: 2012

Amine functionalized multiwalled carbon nanotubes (a-MWNT) based polypropylene (PP) composite fibers were prepared in the presence of polypropylene-g-maleic anhydride (PP-g-MA) by melt-mixing followed by melt-spinning with subsequent post-drawing of the as-spun fibers of varying draw ratio (DR). In order to enhance the interfacial interaction, a-MWNT were utilized in combination with PP-g-MA during melt-mixing. Fourier transform infrared spectroscopic analysis revealed the formation of imide bonds between MA functionality of PP-g-MA and amine functional group of a-MWNT. Higher tensile properties of PP/a-MWNT/PP-g-MA composite fibers were registered with varying DR of the as-spun fiber. Orientation factors of a-MWNT and PP chains along the fiber axis were correlated with the higher tensile modulus and tensile strength of PP/a-MWNT/PP-g-MA composite fiber of varying DR. Crystallization studies indicated the role of hetero-nucleating action of a-MWNT in PP/a-MWNT/PP-g-MA composite fiber. © 2011 Society of Plastics Engineers. Source


News Article | June 11, 2008
Site: gigaom.com

Airtel and Vodafone (NYSE: VOD) will launch the iPhone 3G in India this year. Airtel President and CEO Manoj Kohli is quoted by HT stating the device will available by mid-October. Vodafone however has refused to comment. Both the operators haven’t shared pricing details. Apple’s revised pricing has given my previous post a shining black eye. We had earlier predicted the average pricing of the 2G phones to be Rs 21k (8GB) and around 25k (16GB). The 3G versions will be Rs 8k (8GB) and Rs 12k (16GB), although subject to a 2 year contract in the States. If 3G policy shapes up by year-end and the 3iPhone is able to land at a similar price point, it could turn out to be a great entry buy and sell for both consumers and operators. Besides, being location aware would help operators like RComm (Reliance Technology Ventures has funded Whrrl, the first iPhone app development venture to be funded) to position it based on local services rather than only price cuts. Meanwhile, after having paid twice the amount for a fatter 16GB 2G version, buyers remorse has robbed me of life, appetite and sleep. Thankfully, there is comfort in numbers, I am not the only one to have bitten that Apple (NSDQ: AAPL).


News Article | July 24, 2008
Site: gigaom.com

Intel (NSDQ: INTC) Capital, the venture capital arm of chipmaker Intel, has announced that it would invest $17 million into three Indian companies – which includes travel portal Yatra.com, events-oriented social networking portal BuzzInTown.com, and Emnet Samsara Media Pvt. Ltd., an out-of-home advertising firm focusing on the Indian public transportation market. How much has gone into each company is not not known yet. Yatra.com CEO and founder Dhruv Shringi told VC Circle that this is the third round of investment in the company. He, however, declined to reveal the quantum of the investment. The first two rounds of investments were done by Norwest Venture Partners, Reliance Technology Ventures and TV18 Group. In the case of BuzzInTown, a community oriented site which helps users discover local events in major Indian cities, this could be Series A. Emnet Samsara Media Pvt. Ltd, an OOH media company targeted at public transportation company, joins a list of OOH media companies such as Laqshya, LiveMedia, and DSN that got funded by venture capital firms. Since starting in India in 1998, Intel Capital has invested in approximately 50 companies across eight cities. This story was provided by our content partner VCCircle


News Article | September 25, 2008
Site: gigaom.com

Reliance Technology Ventures and Norwest Venture Partners India have invested an undisclosed amount in Mumbai-based Suvidhaa Infoserve Pvt Ltd, which has a technology that helps people make daily transactions such as railway ticketing, mobile recharge, air ticketing, insurance payment, bill payment, bus ticketing, movie ticketing and so on. The company has already installed its devices in some 4,000 kirana stores. Suvidhaa’s proprietary technology platform integrates these kirana stores to the various services providers’ systems. The company is backed by the Shapoorji Pallonji group and calls itself a services commerce (S-Commerce) firm. Suvidhaa

Discover hidden collaborations