1 Carbon, zeolite, and resins have a limited life.

2 A small bag of zeolite was used for three days, every two weeks to keep ammonia in check.

3 These interfering substances are adsorbed on to zeolite, silicic acid, or magnesium silicate.

4 There are minerals absorbing uranium: zeolite, montmorillonite, carbonaceous matter.

5 Manufacturing zeolite from kaoline is the most economical method.

6 Preferably, the vinylpyridine polymer encapsulates the titanium zeolite.

7 Evolution of zeolite synthesis was reviewed.

8 The results have shown that steel slag and zeolite can remove effectively phosphate and ammonia nitrogen from hogpen waste water.

9 Condensation of phenol and chloral over HY zeolite catalysts was studied in detail.

10 Zeolite B-CF-2 was synthesized using granules of boron-containing silicate porous glass in the mixture vapor of methylamine and water at 473 K.

11 In the alternative,[] the ferrierite zeolite particles are incorporated into the cracking catalyst as an integral component of the catalyst.

12 An experimental synthesis of 4A zeolite is carried out by use of the coal series kaolin roasted in the aqueous solution.

13 In this paper the deactivation of Y-type zeolite catalyst has been studied in theoretical and experimental aspects.

14 Conclusion The adsorptive capacity of diatomite, clinoptilolite, silk zeolite, and coal fly ash to DBP degradation dominant bacteria was enhanced after being modified.

15 Catalytic thermal cracking performance of modified ZSM-5 zeolite is evaluated through pure hydrocarbon impulsive micro-reaction pilot unit.

16 The calcination of HZSM-5 zeolite treated by sulfur acid not only could improve its acid quantity, but also increased strong acid sites with structure of super acid.

17 Such overwintering vats should be as simple as possible: externally filtered zeolite somewhere in the system to cope with ammonia.

18 The chemical transformations that can then occur are quite remarkable, making zeolites some of the most unusual catalysts known.

19 The author has put forward a new type of invented time scale for extending this method to reversible complex networks, e. g. the reaction of xylene isomerization over HZSM-5 zeolite catalyst.

20 The development of new molecular sieves, engineering development in the manufacture of molecular sieves and combination of zeolite catalysis with separation technology are also discussed.

21 Through test and commercial test, the processing technology of ultrafine grinding of natural zeolite is investigated.

22 Home water softeners make use of the ion exchange properties of natural or synthetic zeolite minerals.

23 The process of in-situ crystallization is that the roasted microparticles in the liquid phase convert into sodium silicoaluminate gel first and then the gels convert into zeolite Y gradually.

24 This thesis describes an industrial experiment about the production of cumene on zeolite catalyst in phenol - acetone plant of Jilin Petro- Chemical Co. Ltd.

25 Differential heats of adsorption (DHA) of alkenes and alkanes having similar structures on USY zeolite were measured with a SET ARAM microcalorimeter.

26 The activated process of improving adsorption capacity of natural zeolite is studied in this paper.

27 The phenomenon of phosphorus releasing was observed at the incipience of the investigation especially in the unit of zeolite.

28 The results show that all soil treatments except for sole use of zeolite have improved soil conditions for the growth of Sedum alfredii Hance.

29 With an aiminresolving the problem smoking of polymers on burning, a complex smoke suppressor consisting of ammonium molybdate and molybdic oxide has been prepared, using zeolite as the carrier.

30 Especially by the TS-1 modified with trimethylchlorosilane, much higher catalytic activity was achieved than by parent TS-1 zeolite in the phase-boundary catalysis.

31 The best choice for separating the isomers of chlorotoluene is the adsorption separation by zeolite adsorbents in high efficiency.

32 The most common synthesis technique of zeolite membranes - hydrothermal growthgrowth method, was introduced.

33 The results show that in contrast to phosphoric acid catalyst, the production of cumene on zeolite catalyst exhibits low operating cost, high product yields, high product purity and little corrosion.

34 Zeolite is the general term for zeolite-type minerals. Being rack-shaped, it is a water-containing alkali or a type of alkali soil with metallic aluminosilicate mineral.

35 In this paper, the methylation of biphenyl to 4-methylbiphenyl (4-MBP) over the zeolite catalysts was studied.

36 The formation mechanism of acid sites, mainly the formation mechanism of Bronsted acid sites in HY and REY zeolite as well as Lewis acid sites in matrices and zeolite of FCC catalysts are analyzed.

37 The shapes then further organize into a crystal lattice that resembles a porous structure called zeolite, an absorbent material with many industrial uses. Credit - Michael D.

38 Glucosidation of D-glucose and n-butanol has been successfully carried on different acidic zeolite catalysts, and both butylglucofuranoside and pyranoside were obtained during the reaction.

39 In this paper, the cracking rule of thiophene and short chain alkylthiophenes in decane solution on modified zeolite was studied, under FCC conditions.

40 By changing the proportion of raw materials, different kinds of molecular sieves are obtained, such as those of 4A zeolite, B zeolite, X zeolite ,[http://] hydroxy sodalite and their mixtures.

41 A low-cost three-dimensional large pore HY zeolite was used in the liquid phase benzoylation of various aromatics with benzoyl chloride instead of classical homogeneous catalysts.

42 The roasted product of natural zeolite can be used as a deodorizer of refrigerator.

43 The best choice for separating the isomers of dichlorobenzene is the adsorption separation by zeolite adsorbents in high efficiency.

44 The environmental safety effect of nano-sized iron materials including Fe_3O_4, Fe_3O_4-zeolite composite and iron-doped zeolite was studied using a tetrahymena thermophila model.

45 Taking alunite mineral as main raw material(), they have synthesized successfully into 4A zeolite mineral bearing better physical and chemical performances.

46 Research and development results are reported for the synthesis of ethyl benzene by benzene alkylation with ethylene on AEB type zeolite catalyst in liquid phase.

47 The protonation of template molecule of tetramethylethylene-diamine( TMEDA) trapped in the channels of zeolite ZSM-35 , ZSM-5 and mordenite was studied by using (13)C CP MAS NMR and chemical analysis.

48 Zeolite powder particles, granular bentonite, silica sand color, water clarifying agent and a variety of ultra-fine powder.

49 The esterification of acetic acid with 1-pentanol on HZSM-5 zeolite was studied.

50 The bismuth molybdate is loaded on the zeolite molecular sieve, thus improving the stability of the bismuth molybdate nano particles.

51 Diatom ooze coating is a kind of interior decoration material with main compositions of diatomaceous earth and zeolite.

52 The catalysts comprise a vinylpyridine polymer and a titanium zeolite.

53 The builder capability of sodium salt of maleic anhydride-acrylic acid copolymer, STPP and 4A zeolite is compared.

54 The antibacterial zeolite was modified by the titanate coupling agent blent with Polypropylene (PP), followed by granulating, and spinning.

55 Applications of 4A zeolite as detergent builder, ion-exchange materials, adsorption-desorption materials, catalyst carrier et al were summarized.

56 The variation of heat of formation and O-H bond lengths with the adsorption distance have been calculated . The results show that there are two active adsorption site on the model zeolite.

57 Pulse micro reactor and a micro activity test were chosen to investigate the cracking reaction difference between catalysts containing different ZSM-5 zeolite crystal sizes.

58 The alkine and K rich volcanic rocks, which are source rocks of zeolite ores, formed in middle late Yanshanian stage, with tectonic dynamic mechanism of compression and left lateral shearing.

59 In accordance with the processing conditions, suitable selection of zeolite and matrix to avoid gasoline overcracking and high coke formation was suggested.

60 Three kinds of iron-based catalysts are prepared by impregnation, they are iron loaded powdered silicon dioxide catalyst, iron loaded L zeolite catalyst and iron loaded silica gel catalyst.

61 The Company is engaged in bentonite, zeolite powder, dolomite powder, mica powder, such as deep processing of non-metallic mineral manufacturers.

62 Dichlorophen was synthesized from formalin and p-chlorophenol in the presence of HY zeolite.

63 In this paper, the advantages of microreactor compared to large-scale reactors, the preparation and applications of the microreactors fabricated with zeolites and zeolite membranes were reviewed.

64 The results indicated that the strong acid sites of MCM-22 zeolite benefit the aromatization reaction in opposite to the isomerization process.

65 The purification effect of biological aerated filter stuffed with zeolite, haydite and volcanic rock for river water was studied.

66 In this paper, aromatization activity of metal modified HZSM-5 zeolite have been studied in catalytic cracking of n-heptane.

67 The effects of the decomposition temperature of zeolite catalyst on the Brosted acidity of HZSM-5 and the conversion and selectivity of formaldehyde were investigated.

68 On the basis of riddling various nonmetal minerals and the application test of bentonite, zeolite, apatite, vermiculite, glauconite, expanded pearlite etc.

69 The result of testing products P zeolite showed much better properties than first-rate 4A zeolite in national standard, and can be used as the substitute for STPP.

70 It is mainly discussed on how to synthesize 4A zeolite by a new way of microwave radialization.

71 Upon heating the zeolite[Sentencedict], the normal siloxane linkage would also experience strain due to thermal expansion.

72 A layer including a zeolite, a conductive agent, and a binder resin is formed on a surface of the control electrode.

73 Several zeolite catalysts were selected to convert 1 hexene to 2,3 dimethyl 2 butene (DMB 2) in this work. ZSM 35 and SAPO 11 zeolite are suitable skeletal isomerization catalysts.

74 Reaction properties of RZE-3 zeolite catalyst for etherification of FCC light gasoline were studied in comparison with resin catalysts.

75 DCC catalyst consists of a modified mesopore zeolite with pentasil structure for primary product of naphtha range to undergo secondary cracking for producing light olefins.

76 The temperature-programmed desorption (TPD) of hydrocarbons on HZSM-5 zeolite has been investigated.

77 The preparation of 5A zeolite supported platinum catalyst, and its catalytic capabilities for hydrosilylation reaction of acetylene with triethoxysilane were studied.

78 The catalytic performance of a ZSM-5/ZSM-57 composite zeolite catalyst for the conversion of mixed C4 hydrocarbons was investigated.

79 Meanwhile, the market prospect of synthetic zeolite is also briefly introduced.

80 A new type of germanic zeolite was synthesized in hydrothermal system.

81 Analcime is distributed in sparry calcite and early calcite cement is wrapped in natrolite cement, which shows that the formation of zeolite is later than that of sparry calcite.

82 Thus the preferential exploitation of the vitric tuff in high level is synthesis of zeolite molecular sieves and a series of products made from the synthetic zeolites.

83 New type zeolite catalyst was prepared with new type zeolite as active component, with boehmite as carrier, and its activities of olefins removal was tested and compared with acid clay.

84 Catalytic performances of hydrothermal dealuminated ZSM-5/Y composite zeolite in the cracking of Daqing VGO were studied in comparison with the mechanical mixture of ZSM-5 and Y zeolite.

85 Zeolite A has been synthesized under lower alkalinity by using both 4A and 5A zeolite as the seed crystal.

86 To effectively enhance the contraposition selectivity of chlorinating reaction the p-chlorotoluene was prepared by direct chlorination of toluene and chlorine gas in the presence of zeolite catalyst.

87 The reaction kinetics of cumene cracking on zeolite HZSM-5 with different ratios of st to Al has been studied by using pulse microreactor chromatography technique.

88 Water desorbed from the zeolite at elevated temperature may cause the hydrolysis of the sulfides and thus leads to the desulfidation of the catalysts.

89 The catalyst was made of zeolite as the active component with boehmite as the carrier. Its activity of olefins removal was tested and solid catalyst surface acidity was measured by pyridine FT-IR.

90 The vitric tuff of Linli in Hunan may become a qualified synthetic material of zeolite molecular sieve after it is pretreated adequate1y.

91 The development of shape - selective alkylation of biphenyl to 4,4' - dialkylbiphenyl over zeolite catalysts is reviewed.

92 At the end, zeolite 4A is added to adhesive, so that, the moisture-proof paint for buildings is prepared.

93 The influence of Zeolite size, filter velocity and contact time on removing - nitrogen has been discussed too.

94 The catalytic dehydrogenation of ethylbenzene to styrene in zeolite membrane reactors was studies.

95 A process for chemically removing waxy constituents from lube oil base stock by using zeolite base catalyst under hydrogen atmosphere in order to meet the low temperature characteristics of lube oil.

96 Finally the further developments of zeolite as separation sorbent with the industrial future of application in the petrochemistry are foretold.

97 The mechanochemical effect of natural zeolite particles is studied during the wet ultrafine grinding by stirred mill.

98 An acid-basic bifunctional amine-hybrid H-Y zeolite has been hydrothermally prepared at 416 K with methylamine solution as a modifier.

99 Effect of reaction temperature on coking deactivation of a modified HY zeolite catalyst for alkylation of benzene with propylene was investigated.

100 MOR zeolite was dispersed into poly(ethylene glycol)oligomer to form a stable gel. Its Electrochemical behavior was first detected by a cyclic voltammeter.

101 The paper describes the world's status of new processes of cumene synthesis on zeolite in liquid phase,[] demonstrates the performances of various catalysts for new processes.

102 NMP zeolite has a small head loss through a long time to deal with large amount of water and good renewable.

103 Application of zeolite catalyst in cumene process makes it possible to achieve better quality without pollution.

104 HZSM-5 zeolite catalyst was treated with aqueous H_3BO_3 and the catalytic activity of the prepared catalysts was investigated by the alkylation of toluene with ethanol.

105 The relationship between coking and deactivation of ZSM-5 type zeolite catalyst has been reviewed systematically.

106 Then, HCl solution was used as a regenerant for modified zeolite. Influence that concentration of HCl, flow rate and regenerating time on regeneration effect was also studied.

107 The effects of the catalyst dosage and the preparation conditions of HZ-1 zeolite, for example, number of exchange times on the benzoylation of toluene were studied.

108 This paper describes the study of low phosphate style concentrate laundry powder prescription that part of the sodium tripolyphosphate is superseded by the natural zeolite.

109 The hydroisomerization and aromatization of 1-hexene over potassium modified MCM-22 zeolite were investigated.

110 The difference of gasoline and diesel yields between the composite and mechanical mixture was elucidated from the structure of composite zeolite and shape-selective catalysis of ZSM-5.

111 ZSM-5 zeolite membranes were prepared by second growth method and modified with metallic ion.

112 The constraint index for shape selectivity of zeolite catalyst of ZSM type has been determined by means of gas chromatography in connection with a continuous flow micro-reactor under normal pressure.

113 Catalysts for converting polyalkylaromatics to monoalkylaromatics, particularly cumene and ethyl benzene are disclosed which comprise aY-85 or a modified LZ-210 zeolite.

114 In the field of detergent ingredients, sodium tripolyphosphate. zeolite A and crystalline layered disilicate SKS-6 are well-established builders.

115 The power rate law model and the linear model are both suitable to the zeolite bioregeneration process in column during bioregeneration period.

116 Heulandite is one of the most common and one of the most well known members of the Zeolite Group.

117 The sea water desalting agent consists of silver-carrying acid zeolite, silver oxide and barium hydroxide.

118 In this method, the activation energy is reduced during deaminization and the deaminizating rate and the retention of zeolite crystallinity after deaminization are increased.

119 The in-situ formed byproduct water strongly adsorbs on the B-acid site of zeolite, and would inhibit the further adsorption and reaction of the aromatic reactants and alcohol reagents.

120 Several factors that influence shape-selective synthesis of 2,6-dialkylnaphthalene over zeolite such as alkylating reagents, solvents and selection of zeolites are reviewed.

121 According to chemical composition, exchangeable cation and thermal behaviors of crystal structure, Xuancheng zeolite should belong to calcium-rich clinoptilolite with low thermal stability.

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159