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Mesoporous Beta Zeolite Catalysts for Benzylation of Naphthalene

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Cas 1318 02 1 Beta Zeolite Molecular Sieve

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Mesoporous Beta Zeolite Catalysts for Benzylation of Naphthalene

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Product Details:

Place of Origin:	china
Brand Name:	QD
Certification:	ISO9001：2015
Model Number:	SiO2/Al2O3=20-150

Payment & Shipping Terms:

Minimum Order Quantity:	1 kg
Price:	USD40000-100000 Ton
Packaging Details:	25kg/bags or 500kg/bags and carbon
Delivery Time:	5-8days
Payment Terms:	T/T, L/C
Supply Ability:	1000Ton per month

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Mesoporous Beta Zeolite Catalysts for Benzylation of Naphthalene

Description

SiO2/Al2O3:	20-200	Color:	White Powder
Total Specific Surface:	500-650 M2/g	Microporous Specific Surface:	430-460m2/g
CAS:	1318-02-1	Larger Export:	1000ton
High Light:	650 M2/G Beta Zeolite Catalysts , Sodium Beta Zeolite Catalysts , Zeolite Catalysts for Benzylation of Naphthalene

Mesoporous Beta Zeolite Catalysts for Benzylation of Naphthalene: Effect of Pore Structure and Acidity

SiO2/Al2O3 Mole Ratio: 25-200

Nominal Cation Form: Sodium/Hydrogen

Na2O Weight %: 0.1

Surface Area, m2/g: 540

Zeolite beta

Mesoporous Beta Zeolite Catalysts for Benzylation of Naphthalene 0

Abstract: To improve the catalytic performance of zeolite catalysts in reactions involving bulky

molecules, a series of mesoporous Beta zeolite were prepared using organic functionalized fumed

silica as the silicon source, which were thoroughly characterized in terms of porosity and acidity.

The peaks in X-ray diffraction (XRD) patterns showed broadening, and the external surface area

and mesoporosity increased progressively when the content of organic functionalization increased.

An infrared (IR) spectroscopy study of adsorbed probe molecules, including pyridine (Py-IR),

2,6-ditertbutylpyridine (DTBPy-IR) and pivalonitrile (Pn-IR), showed that the improvement of

mesoporosity increased the accessibility of acidic sites. In the catalytic benzylation of naphthalene

with benzyl chloride (BC) over the mesoporous Beta zeolite catalysts, the conversion of BC was

signifificantly increased when the accessibility of Brönsted acid sites improved. The increase of

mesoporosity not only improved the diffusion ability of the reactants and products, but also increased

the accessibility of acid sites, which greatly enhanced the activity of the mesoporous Beta zeolite

catalysts. It is highlighted that the interdependence of mesoporosity, acid type, acid concentration,

and strength of the mesoporous Beta zeolites on the catalytic performance in the benzylation of

naphthalene with BC was comprehensively studied.

β molecular sieves have three mutually intersecting 12-ring channels, it is only 12 yuan a three-dimensional pore structure of zeolite ring.

β zeolite having high hydrocracking, hydroisomerization catalytic activity and adsorption capacity of linear paraffins, and good resistance to sulfur and nitrogen poisoning. It can be used in the petrochemical industry of benzene with propylene olefin system cumene, cumene metathesis diisopropylbenzene, toluene Isopropylation, aromatics alkylation, transalkylation diisopropylbenzene, propylene ether, methanol aryl structured, propylene oxide and acetic ether of phenol methylation, methylation of aniline, toluene transalkylation preparation of cumene and toluene disproportionation and transalkylation reaction with a catalyst such. β-type USY zeolite used in conjunction with the increase of the octane number of gasoline. In the fine chemical industry, β zeolite has excellent activity and selectivity in the dehydration deamination.

Beta zeolite 25

Item	Unit	Min	Typical	Max	Analytical Method
Relative crystallinity	%	78	80		X-ray diffractometer
Crystal size	nm	50	70
Total specific surface	m2/g	500	540		N2 adsorption
Microporous specific surface	m2/g	430	460		N2 adsorption
Pore volume	ml/g	0.3	0.4		N2 adsorption
silica-alumina ratio	/	23	25	27	XRF
Na2O	wt%			0.1	Flame photometric analysis
SO₄^2-	wt%			0.4	XRF
Cl-	wt%			0.2	chemical analysis
L.O.I.	wt%			10	Gravimetric analysis
D50	um			7	laster scatter distrioution
D90	um			9	laster scatter distrioution

Beta zeolite 28

Item	Unit	Min	Typical	Max	Analytical Method
Relative crystallinity	%	82	86		X-ray diffractometer
Crystal size	nm	200	300
Total specific surface	m2/g	580	600		N2 adsorption
Microporous specific surface	m2/g	460	480		N2 adsorption
Pore volume	ml/g	0.35	0.37		N2 adsorption
silica-alumina ratio	/	26	28	30	XRF
Na2O	wt%			0.05	Flame photometric analysis
SO₄^2-	wt%			0.4	XRF
Cl-	wt%			0.2	chemical analysis
L.O.I.	wt%			10	Gravimetric analysis
D50	um			7	laster scatter distrioution
D90	um			9	laster scatter distrioution

Beta zeolite 30

Item	Unit	Min	Typical	Max	Analytical Method
Relative crystallinity	%	78	80		X-ray diffractometer
Crystal size	nm	50	70
Total specific surface	m2/g	500	540		N2 adsorption
Microporous specific surface	m2/g	430	460		N2 adsorption
Pore volume	ml/g	0.3	0.4		N2 adsorption
silica-alumina ratio	/	28	30	32	XRF
Na2O	wt%			0.1	Flame photometric analysis
SO₄^2-	wt%			0.4	XRF
Cl-	wt%			0.2	chemical analysis
L.O.I.	wt%			10	Gravimetric analysis
D50	um			7	laster scatter distrioution
D90	um			9	laster scatter distrioution

Beta zeolite 50

Item	Unit	Min	Typical	Max	Analytical Method
Relative crystallinity	%	78	80		X-ray diffractometer
Crystal size	nm	50	70
Total specific surface	m2/g	500	540		N2 adsorption
Microporous specific surface	m2/g	430	460		N2 adsorption
Pore volume	ml/g	0.3	0.4		N2 adsorption
silica-alumina ratio	/	48	50	52	XRF
Na2O	wt%			0.1	Flame photometric analysis
SO₄^2-	wt%			0.4	XRF
Cl-	wt%			0.2	chemical analysis
L.O.I.	wt%			10	Gravimetric analysis
D50	um			7	laster scatter distrioution
D90	um			9	laster scatter distrioution

Zeolite beta is used in isomerization of waxes, and Friedel Crafts reactions (alkylation and acylation)Zeolite β, hydrogen is used as a molecular sieve, filter, adsorbent, catalyst, drying agent, cation exchanger, dispersing agent and detergent builder. It serves as an acid catalyst and utilized as an alternative to the known methods for protection of alcohols as tetrahydropyranyl ethers and the deprotection of tetrahydropyranyl ethers. It is also used in the stereoselective Meerwein-Ponndorf-Verley reduction of ketones. Further, it is used as an efficient and recyclable catalyst for the tetrahydropyranylation of alcohols and phenols

We can produce beta zeolite according customers demand.

Our zeoite and catalyst factory are in follow.

The fixed-bed catalyst production project covers an area of about 5,000 square meters and a building area of 2,000 square meters. It is fully equipped with public works and has more than 40 sets of catalyst production equipment. It has a complete fixed-bed catalyst production system, and the production units that can be carried out mainly include: pretreatment of catalyst raw powder, impregnation, molding, drying/roasting, screening and environmental protection treatment, etc., which can meet the production of various fixed-bed catalysts.

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Contact Person: Mr. Kevin

Tel: +8615666538082

Fax: 86-533-52065599-2

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