Monitoring by in situ neutron diffraction of simultaneous dehydration and Ni2+ mobility in partially exchanged NaY zeolites

نویسندگان

  • Florence Porcher
  • Jean-Louis Paillaud
  • Lucia Gaberova
  • Gilles André
  • Sandra Casale
  • Pascale Massiani
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Adsorption of Ni2+ Ions onto NaX and NaY Zeolites: Equilibrium, Kinetics, Intra Crystalline Diffusion, and Thermodynamic Studies

This paper focuses on intra crystalline diffusion of Ni2+ ions onto NaX and NaY zeolites. The zeolites are obtained by the hydrothermal synthesis method. The samples were characterized by several techniques: X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) coupled with Energy Dispersive Spectroscopy (EDS) and InfraRed Spectroscopy (FT-IR). Physical parameters such as p...

متن کامل

Crystal Structure of Zeolite Y as a Function of Ion Exchange

The crystal structures of a series of hydrated Na-, NH4-, Caand La-exchanged zeolite Y have been determined as a function of exchange conditions using synchrotron powder diffraction data. Four sieves were also studied in the dehydrated state in situ at 300°C. Only small differences in the framework structures were observed; the largest differences involve 02 and 03, to which the cations are coo...

متن کامل

Structural Effects on Adsorption of Atmospheric Gases in Mixed Li,Ag–X-Zeolite

Sil®er is known to strongly affect the adsorpti®e properties of zeolites. In the synthesis ( ) of mixed Li,Ag low-silica X-type LSX zeolite, adding ®ery small amounts of sil®er and specific dehydration conditions results in a sorbent with enhanced adsorpti®e characteristics for air separation. The location of the extraframework sil®er in relation to the aluminosilicate framework is of primary i...

متن کامل

Synthesis of nanocrystalline zeolite NaY by hydrothermal method and investigation of its structure and morphology

Zeolite FAU type-Y is one of the most studied framework of all zeolites, and has been used as catalysts for number of reactions in the refinery and petrochemical industry. In this research, nanocrystalline zeolite Y was synthesized by hydrothermal method. The crystal size of zeolite Y is influenced by temperature, aging time, alkalinity, and water content. The synthesized zeolite NaY is identif...

متن کامل

Simultaneous adsorption of a mixture of paraquat and dye by NaY zeolite covered with alkylsilane.

The surfaces of NaY zeolite particles were modified by the alkylsilylation of n-octadecyltrichlorosilane (OTS). Two kinds of modified NaY zeolites were prepared; one with its external surface partially and the other fully covered with alkylsilyl groups. Since the size of OTS is bigger than the pore diameter of NaY, it is attached on the external surface, leaving the internal pore accessible to ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2017