The catalyst decay rate increased in the order HZSM-5 << HY < HM; coking of the zeolite increased the fraction of para-isomer in the ethyltoluenes. On HZSM-5 modified with alkaline earth metal, the conversion of ethylbenzene decreased with concomitantly increased selectivity of para-ethyltoluene...
Cellulose has been selectively converted into different chemicals, such as glycols (ethylene glycol and propylene glycol, EG/PG) oligomers3, glucose2, HMF1, through a series of chemical rseoarcbtiitoonl4s,,hinexciltuodlsin5 ganhdydCr2o/lCy-3 sis, dehydration and noteworthy because ...
/ Cu and Bi on the support mesoporous zeolite, the richer acidic sites and the strong interaction between the active copper It is and bismuth well known tshpaetctiehseorneatlhdeiCesue1lBeix1-hmauBsettaprceosuelndtsbelamrgaeinnucomnbtreirbouftiwonastetrovtahpeocrataanlydtitcraaccetiSvictyo.m...
Direct solid-state NMR spectroscopic evidence for the NH4AlF4 crystalline phase derived from zeolite HY dealuminated with ammonium hexafluorosilicate.magnetic resonance, nuclear quadrupole resonance (solids and liquids)aluminum, Alfluorine, Fion exchange, zeolites, molecular sieves, crown ethers, clays...
Determination of the 31P-27Al- J-coupling constant for tri- methylphosphine bound to the Lewis acid site of zeolite HY. J Am Chem Soc 1997;119:627.Kao HM,Grey CP.Determination of the 31P-27Al J-Coupling Constant for Trimethylphosphine Bound to the Lewis Acid Site of Zeolite HY. ...
Kao HM,Grey CP.Characterization of the Lewis acid sites in zeolite HY with the probe molecule trimethylphosphine, and 31P/27Al double resonance NMR. Chemical Physics Letters . 1996Kao HM,Grey CP.Characterization of the Lewis acid sites in zeolite HY with the probe molecule trimethylphosphine, ...
Multinuclear 1H, 19F, and 27Al MAS (magic angle spinning) and corresponding 2D HETCOR (heteronuclear correlation) NMR spectroscopy, in combination with powder XRD measurements, provide the direct evidence for the NH4AlF4 crystalline phase, which was formed from zeolite HY dealuminated with an ...
Zhao;L;Wang;HB;Liu;M;Guo;XW;Wang;XS;Song;CS;Liu;HM.Shape-selective methylation of 2-methylnaphthalene with methanol over hydrothermal treated HZSM-5 zeolite catalysts.Chemical Engineering Communications.2008Zhao L Wang HB Liu M Guo XW Wang XS Song CS Liu HM . Shape-selective methylation of ...
Direct Solid-State NMR Spectroscopic Evidence for the NH4AlF4 Crystalline Phase Derived from Zeolite HY Dealuminated with Ammonium Hexafluorosilicatemagnetic resonance, nuclear quadrupole resonance (solids and liquids)aluminum, Alfluorine, Fion exchange, zeolites, molecular sieves, crown ethers, clays...
rBeraekatkhtrhoruoguhghC Cuurvrvee, ,C Caappaacciittyy aanndd UUssaaggee RRaattee AAnnaallyyssisis fsreorpt(hvCmreie)cT s TeshfeTaretneobirhtmvmbeleeid rec be Te6ofra oaefkntbraiato mlkehnertar eamhc6o lrhy ouaon sflgouo iisfhzagr...